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- Physaria occidentalis (10 revisions)
- Andropogon floridanus (10 revisions)
- Photinia glabra (10 revisions)
- Dichanthelium dichotomum subsp. dichotomum (10 revisions)
- Helianthus debilis (10 revisions)
- Polypogon imberbis (10 revisions)
- Sphaeralcea caespitosa (10 revisions)
- Bouteloua hirsuta subsp. pectinata (10 revisions)
- Festuca idahoensis (10 revisions)
- Juncus falcatus (10 revisions)
- Pharus (10 revisions)
- Penstemon lentus (10 revisions)
- Piptatherum miliaceum (10 revisions)
- Agoseris grandiflora (10 revisions)
- Andropogon glomeratus var. hirsutior (10 revisions)
- Pennisetum petiolare (10 revisions)
- Dichanthelium tenue (10 revisions)
- Helianthus niveus (10 revisions)
- Arctagrostis latifolia subsp. arundinacea (10 revisions)
- Heliopsis helianthoides (10 revisions)
- Opizia stolonifera (10 revisions)
- Equisetum (10 revisions)
- Vulpia octoflora (10 revisions)
- Tridens texanus (10 revisions)
- ×elyhordeum montanense (10 revisions)
- Hypericum mutilum (10 revisions)
- Eucephalus ledophyllus (10 revisions)
- Hesperostipa neomexicana (10 revisions)
- Calamagrostis sesquiflora (10 revisions)
- Nothocalaïs alpestris (10 revisions)
- Schizachyrium rhizomatum (10 revisions)
- Setariopsis auriculata (10 revisions)
- Dichanthelium aciculare subsp. angustifolium (10 revisions)
- Pinus sabiniana (10 revisions)
- Cynosurus echinatus (10 revisions)
- Rudbeckia hirta (10 revisions)
- Hilaria belangeri var. longifolia (10 revisions)
- Lolium temulentum (10 revisions)
- Sporobolus contractus (10 revisions)
- Elymus canadensis var. canadensis (10 revisions)
- Hypericum maculatum (10 revisions)
- Heterotheca subaxillaris (10 revisions)
- Nassella leucotricha (10 revisions)
- Calamagrostis nutkaensis (10 revisions)
- Eragrostis scaligera (10 revisions)
- Setaria subg. Setaria (10 revisions)
- Triphysaria versicolor (10 revisions)
- Cerastium alpinum (10 revisions)
- Bromidium (10 revisions)
- Enneapogon (10 revisions)
- Crypsis alopecuroides (10 revisions)
- Erigeron glacialis (10 revisions)
- Elymus churchii (10 revisions)
- Amelichloa brachychaeta (10 revisions)
- Scolochloa festucacea (10 revisions)
- Coelorachis rugosa (10 revisions)
- Cirsium cymosum (10 revisions)
- Setaria verticillata (10 revisions)
- Picea sitchensis (10 revisions)
- Galinsoga parviflora (10 revisions)
- Panicum hirticaule subsp. hirticaule (10 revisions)
- Vaccinium erythrocarpum (10 revisions)
- Aristida dichotoma var. curtissii (10 revisions)
- Micranthes nelsoniana (10 revisions)
- Neostapfia colusana (10 revisions)
- Lycopodium hickeyi (10 revisions)
- Phippsia concinna (10 revisions)
- Potamogeton pusillus (10 revisions)
- Muhlenbergia andina (10 revisions)
- Fragaria chiloensis (10 revisions)
- Elymus alaskanus (10 revisions)
- Viola biflora (10 revisions)
- Heterotheca villosa (10 revisions)
- Bromus catharticus (10 revisions)
- Trisetum melicoides (10 revisions)
- Salix brachycarpa (10 revisions)
- Hymenachne (10 revisions)
- Frangula rubra (10 revisions)
- Panicum dichotomiflorum (10 revisions)
- Atriplex glabriuscula (10 revisions)
- Aristida arizonica (10 revisions)
- Carex luzulina (10 revisions)
- Schismus (10 revisions)
- Muhlenbergia thurberi (10 revisions)
- Elymus wawawaiensis (10 revisions)
- Petasites frigidus (10 revisions)
- Rostraria (10 revisions)
- Lepidium lasiocarpum (10 revisions)
- Pogonarthria (10 revisions)
- Paspalum conjugatum (10 revisions)
- Panicum sect. Agrostoidea (10 revisions)
- Poaceae tribe Centotheceae (10 revisions)
- Senecio serra (10 revisions)
- Aristida desmantha (10 revisions)
- Poa alpina subsp. vivipara (10 revisions)
- Muhlenbergia repens (10 revisions)
- Bromus texensis (10 revisions)
- Phalaris paradoxa (10 revisions)
- Dactyloctenium geminatum (10 revisions)
- Paspalum conspersum (10 revisions)
- Mentzelia torreyi (10 revisions)
- Panicum bulbosum (10 revisions)
- Rosa rubiginosa (10 revisions)
- Digitaria (10 revisions)
- Orobanche corymbosa (10 revisions)
- Passiflora foetida (10 revisions)
- Muhlenbergia emersleyi (10 revisions)
- ×pascoleymus (10 revisions)
- Penstemon glaber (10 revisions)
- Linum australe (10 revisions)
- Arundinaria tecta (10 revisions)
- Streptanthus carinatus (10 revisions)
- Corydalis crystallina (10 revisions)
- Sporobolus jacquemontii (10 revisions)
- Paysonia lasiocarpa (10 revisions)
- Digitaria insularis (10 revisions)
- Selaginella ludoviciana (10 revisions)
- Poa chaixii (10 revisions)
- Leymus angustus (10 revisions)
- Erigeron pumilus (10 revisions)
- Bromus hordeaceus subsp. thominei (10 revisions)
- Alopecurus magellanicus (10 revisions)
- Swallenia (10 revisions)
- Paspalum hartwegianum (10 revisions)
- Sequoiadendron giganteum (10 revisions)
- Digitaria milanjiana (10 revisions)
- Dupontia fisheri (10 revisions)
- Symphyotrichum patens (10 revisions)
- Poa macrantha (10 revisions)
- Chloris canterae var. canterae (10 revisions)
- Oreostemma alpigenum (10 revisions)
- ×leydeum (10 revisions)
- Hordeum brachyantherum subsp. brachyantherum (10 revisions)
- Pascopyrum smithii (10 revisions)
- Saccharum brevibarbe var. contortum (10 revisions)
- Ceanothus prostratus (10 revisions)
- Amphicarpum muhlenbergianum (10 revisions)
- Briza (10 revisions)
- Liatris spicata (10 revisions)
- Artemisia tridentata (10 revisions)
- Poa ×nematophylla (10 revisions)
- Munroa squarrosa (10 revisions)
- Festuca (10 revisions)
- Hordeum bulbosum (10 revisions)
- Melica porteri (10 revisions)
- Antennaria howellii (10 revisions)
- Ranunculus pensylvanicus (10 revisions)
- Imperata brasiliensis (10 revisions)
- Echinochloa crus-pavonis (10 revisions)
- Sphenopholis (10 revisions)
- Poa paludigena (10 revisions)
- Trichloris (10 revisions)
- Zizaniopsis (10 revisions)
- Aegilops tauschii (10 revisions)
- Pleuropogon oregonus (10 revisions)
- Antennaria rosea (10 revisions)
- Sorghastrum (10 revisions)
- Hymenopappus scabiosaeus (10 revisions)
- Heuchera parviflora (10 revisions)
- Dichanthelium sect. Pedicellata (10 revisions)
- Chenopodium glaucum (10 revisions)
- Deschampsia alpina (10 revisions)
- Artemisia laciniata (10 revisions)
- Poa abbreviata (10 revisions)
- Microchloa kunthii (10 revisions)
- Festuca rubra subsp. arenaria (10 revisions)
- Penstemon crandallii (10 revisions)
- Achnatherum lemmonii (10 revisions)
- Bulbostylis ciliatifolia (10 revisions)
- Physaria kingii (10 revisions)
- Ulmus glabra (10 revisions)
- Eragrostis intermedia (10 revisions)
- Urochloa villosa (10 revisions)
- Dichanthelium clandestinum (10 revisions)
- Agrostis clavata (10 revisions)
- Pyrrocoma carthamoides (10 revisions)
- Poa hartzii subsp. hartzii (10 revisions)
- Festuca ovina (10 revisions)
- Achnatherum diegoense (10 revisions)
- Scleria ciliata (10 revisions)
- Apluda (10 revisions)
- Eriochloa contracta (10 revisions)
- Sedum lanceolatum (10 revisions)
- Dichanthelium acuminatum subsp. leucothrix (10 revisions)
- Aconogonon davisiae (10 revisions)
- Agrostis rossiae (10 revisions)
- Bouteloua warnockii (10 revisions)
- Prunus virginiana (10 revisions)
- Festuca saximontana var. robertsiana (10 revisions)
- Achnatherum contractum (10 revisions)
- Andropogon liebmannii (10 revisions)
- Pennisetum macrostachys (10 revisions)
- Dichanthelium dichotomum subsp. lucidum (10 revisions)
- ×agropogon (10 revisions)
- Eutrochium maculatum (10 revisions)
- Pyrrocoma uniflora (10 revisions)
- Bouteloua eriopoda (10 revisions)
- Festuca roemeri (10 revisions)
- Leersia (10 revisions)
- Solidago patula (10 revisions)
- Hypericum hypericoides (10 revisions)
- Chrysopsis gossypina (10 revisions)
- Piptatherum miliaceum subsp. miliaceum (10 revisions)
- Diplacus bigelovii (10 revisions)
- Andropogon glomeratus var. pumilus (10 revisions)
- Cenchrus (10 revisions)
- Cordylanthus wrightii (10 revisions)
- Dichanthelium chamaelonche (10 revisions)
- Arctagrostis latifolia subsp. latifolia (10 revisions)
- Pedicularis racemosa (10 revisions)
- Buchloë (10 revisions)
- Vulpia octoflora var. glauca (10 revisions)
- Eriogonum microtheca var. schoolcraftii (10 revisions)
- ×elyhordeum californicum (10 revisions)
- Pityopsis graminifolia (10 revisions)
- Hesperostipa curtiseta (10 revisions)
- Calamagrostis tacomensis (10 revisions)
- Schizachyrium maritimum (10 revisions)
- Rhamnus davurica (10 revisions)
- Dichanthelium aciculare subsp. fusiforme (10 revisions)
- Eremogone macradenia (10 revisions)
- Parapholis (10 revisions)
- Chrysogonum virginianum (10 revisions)
- Sphaeralcea rusbyi (10 revisions)
- Hilaria swallenii (10 revisions)
- Sporobolus texanus (10 revisions)
- Elymus canadensis var. robustus (10 revisions)
- Penstemon eriantherus (10 revisions)
- Nassella manicata (10 revisions)
- Carex muricata (10 revisions)
- Phyllanthus abnormis (10 revisions)
- Calamagrostis pickeringii (10 revisions)
- Microseris douglasii (10 revisions)
- Heteropogon contortus (10 revisions)
- Setaria texana (10 revisions)
- Panicum subg. Panicum (10 revisions)
- Bromidium tandilense (10 revisions)
- Chaenactis douglasii (10 revisions)
- Enneapogon cenchroides (10 revisions)
- Puccinellia bruggemannii (10 revisions)
- Crypsis schoenoides (10 revisions)
- Elymus diversiglumis (10 revisions)
- Amelichloa caudata (10 revisions)
- Glyceria notata (10 revisions)
- Populus deltoides (10 revisions)
- Coelorachis tuberculosa (10 revisions)
- Setaria verticilliformis (10 revisions)
- Spiraea alba (10 revisions)
- Phryma leptostachya (10 revisions)
- Ribes sanguineum (10 revisions)
- Panicum hirticaule subsp. sonorum (10 revisions)
- Aristida dichotoma var. dichotoma (10 revisions)
- Rhododendron minus (10 revisions)
- Carex tenera (10 revisions)
- Nardus (10 revisions)
- Muhlenbergia ×curtisetosa (10 revisions)
- Elymus alaskanus subsp. alaskanus (10 revisions)
- Bromus catharticus var. catharticus (10 revisions)
- Arceuthobium campylopodum (10 revisions)
- Trisetum wolfii (10 revisions)
- Zea perennis (10 revisions)
- Hymenachne amplexicaulis (10 revisions)
- Centromadia pungens (10 revisions)
- Panicum dichotomiflorum subsp. bartowense (10 revisions)
- Trichoneura elegans (10 revisions)
- Cucumis sativus (10 revisions)
- Leptochloa panicoides (10 revisions)
- Poa saltuensis subsp. saltuensis (10 revisions)
- Muhlenbergia curtifolia (10 revisions)
- Viola epipsila (10 revisions)
- Potentilla ovina (10 revisions)
- Bromus pumpellianus subsp. pumpellianus (10 revisions)
- Rostraria cristata (10 revisions)
- Pogonarthria squarrosa (10 revisions)
- Paspalum distichum (10 revisions)
- Panicum rigidulum (10 revisions)
- Chasmanthium (10 revisions)
- Aristida tuberculosa (10 revisions)
- Poa sect. Micrantherae (10 revisions)
- Muhlenbergia utilis (10 revisions)
- ×elyleymus turneri (10 revisions)
- Bromus vulgaris (10 revisions)
- Phalaris coerulescens (10 revisions)
- Paspalum convexum (10 revisions)
- Panicum plenum (10 revisions)
- Digitaria cognata (10 revisions)
- Poa arctica subsp. aperta (10 revisions)
- Muhlenbergia ×involuta (10 revisions)
- ×pascoleymus bowdenii (10 revisions)
- Erigeron poliospermus (10 revisions)
- Bromus tectorum (10 revisions)
- Melica frutescens (10 revisions)
- Sporobolus creber (10 revisions)
- Paspalum setaceum var. psammophilum (10 revisions)
- Digitaria serotina (10 revisions)
- Polygonum aviculare (10 revisions)
- Orobanche cooperi (10 revisions)
- Malvaceae (10 revisions)
- Abies balsamea (10 revisions)
- Poa strictiramea (10 revisions)
- Blepharidachne bigelovii (10 revisions)
- Boltonia asteroides (10 revisions)
- Carex lucorum (10 revisions)
- Leymus condensatus (10 revisions)
- Potentilla hyparctica (10 revisions)
- Bromus racemosus (10 revisions)
- Alopecurus geniculatus (10 revisions)
- Sphaeromeria potentilloides (10 revisions)
- Cirsium horridulum (10 revisions)
- Boehmeria nivea (10 revisions)
- Swallenia alexandrae (10 revisions)
- Paspalum pubiflorum (10 revisions)
- Crataegus schuettei (10 revisions)
- Digitaria velutina (10 revisions)
- ×arctodupontia (10 revisions)
- Ranunculus bulbosus (10 revisions)
- Artemisia arbuscula (10 revisions)
- Poa confinis (10 revisions)
- Chloris canterae var. grandiflora (10 revisions)
- ×leydeum piperi (10 revisions)
- Hordeum brachyantherum subsp. californicum (10 revisions)
- Poa arctica (10 revisions)
- Botrychium matricariifolium (10 revisions)
- Ranunculus occidentalis var. nelsonii (10 revisions)
- Orcuttia viscida (10 revisions)
- Clematis terniflora (10 revisions)
- Saccharum coarctatum (10 revisions)
- Dryopteris carthusiana (10 revisions)
- Eragrostis amabilis (10 revisions)
- Glyceria pulchella (10 revisions)
- Symphyotrichum ericoides (10 revisions)
- Dieteria bigelovii (10 revisions)
- Poa porsildii (10 revisions)
- Chloris submutica (10 revisions)
- Carex supina (10 revisions)
- Festuca subg. Montanae (10 revisions)
- Hordeum vulgare (10 revisions)
- Melica porteri var. laxa (10 revisions)
- Arctostaphylos canescens (10 revisions)
- Echinochloa crus-pavonis var. crus-pavonis (10 revisions)
- Sphenopholis pensylvanica (10 revisions)
- Symphyotrichum drummondii (10 revisions)
- Poa leptocoma (10 revisions)
- Trichloris crinita (10 revisions)
- Festuca subg. Festuca (10 revisions)
- Aegilops ventricosa (10 revisions)
- Pleuropogon refractus (10 revisions)
- Urticaceae (10 revisions)
- Physaria gracilis (10 revisions)
- Sorghastrum elliottii (10 revisions)
- Melinis minutiflora (10 revisions)
- Spergularia canadensis (10 revisions)
- Dichanthelium pedicellatum (10 revisions)
- Arundinaria (10 revisions)
- Poa abbreviata subsp. abbreviata (10 revisions)
- Bambusa multiplex (10 revisions)
- Bothriochloa laguroides (10 revisions)
- Urochloa subquadripara (10 revisions)
- Arceuthobium campylopodum subsp. littorum (10 revisions)
- Potentilla glaucophylla (10 revisions)
- Dichanthelium scoparium (10 revisions)
- Poa hartzii subsp. vrangelica (10 revisions)
- Spartina anglica (10 revisions)
- Poaceae subfam. Bambusoideae (10 revisions)
- Juncus ensifolius (10 revisions)
- Packera pseudaurea (10 revisions)
- Achnatherum lobatum (10 revisions)
- Cakile maritima (10 revisions)
- Eragrostis refracta (10 revisions)
- Eriochloa fatmensis (10 revisions)
- Mentzelia longiloba (10 revisions)
- Dichanthelium acuminatum subsp. lindheimeri (10 revisions)
- Agrostis hendersonii (10 revisions)
- Bouteloua uniflora (10 revisions)
- Penstemon deustus (10 revisions)
- Lycopodium lagopus (10 revisions)
- Festuca saximontana var. saximontana (10 revisions)
- Pseudophoenix sargentii (10 revisions)
- Phyllostachys aurea (10 revisions)
- Andropogon gyrans (10 revisions)
- Betula pumila (10 revisions)
- Pennisetum macrourum (10 revisions)
- Thymophylla aurea (10 revisions)
- Dichanthelium dichotomum subsp. mattamuskeetense (10 revisions)
- ×agropogon lutosus (10 revisions)
- Polanisia dodecandra (10 revisions)
- Bouteloua trifida (10 revisions)
- Festuca viridula (10 revisions)
- Pseudoroegneria (10 revisions)
- Croton lindheimerianus (10 revisions)
- Andropogon glomeratus var. scabriglumis (10 revisions)
- Cenchrus brownii (10 revisions)
- Dichanthelium chamaelonche subsp. breve (10 revisions)
- Lepidium virginicum (10 revisions)
- Eremogone eastwoodiae (10 revisions)
- Zuckia brandegeei (10 revisions)
- Sesleria (10 revisions)
- Carex haydeniana (10 revisions)
- Buchloë dactyloides (10 revisions)
- Vulpia octoflora var. hirtella (10 revisions)
- Tridens flavus var. chapmanii (10 revisions)
- Elymus (10 revisions)
- Hesperostipa spartea (10 revisions)
- Glyceria fluitans (10 revisions)
- Schizachyrium littorale (10 revisions)
- Setaria subg. Ptychophyllum (10 revisions)
- Sarracenia alabamensis (10 revisions)
- Dichanthelium aciculare subsp. neuranthum (10 revisions)
- Noccaea fendleri (10 revisions)
- Parapholis incurva (10 revisions)
- Stevia plummerae (10 revisions)
- Tragus (10 revisions)
- Lolium temulentum subsp. temulentum (10 revisions)
- Sporobolus nealleyi (10 revisions)
- Leersia virginica (10 revisions)
- Hypericum perforatum (10 revisions)
- Nassella lepida (10 revisions)
- Calamagrostis montanensis (10 revisions)
- Heteropogon melanocarpus (10 revisions)
- Setaria macrostachya (10 revisions)
- Linaria genistifolia (10 revisions)
- Panicum sect. Panicum (10 revisions)
- Avenula (10 revisions)
- Enneapogon desvauxii (10 revisions)
- Puccinellia tenella (10 revisions)
- Crypsis vaginiflora (10 revisions)
- Elymus hystrix (10 revisions)
- Amelichloa clandestina (10 revisions)
- Quercus sect. Protobalanus (10 revisions)
- Eremochloa (10 revisions)
- Setaria viridis (10 revisions)
- Crataegus scabrida (10 revisions)
- Arceuthobium vaginatum (10 revisions)
- Panicum hirticaule subsp. stramineum (10 revisions)
- Gymnocarpium robertianum (10 revisions)
- Amelanchier alnifolia (10 revisions)
- Aristida longespica (10 revisions)
- Hazardia whitneyi (10 revisions)
- Agalinis purpurea (10 revisions)
- Poaceae tribe Danthonieae (10 revisions)
- Penstemon azureus (10 revisions)
- Sclerochloa (10 revisions)
- Erigeron formosissimus (10 revisions)
- Hygroryza (10 revisions)
- Penstemon barbatus (10 revisions)
- Bromus catharticus var. elatus (10 revisions)
- Trisetum orthochaetum (10 revisions)
- Zea luxurians (10 revisions)
- Steinchisma (10 revisions)
- Spiraea douglasii (10 revisions)
- Chimaphila umbellata (10 revisions)
- Panicum dichotomiflorum subsp. dichotomiflorum (10 revisions)
- Amelanchier canadensis (10 revisions)
- Aristida stricta (10 revisions)
- Schismus arabicus (10 revisions)
- Poa alsodes (10 revisions)
- Muhlenbergia pauciflora (10 revisions)
- Erigeron bellidiastrum (10 revisions)
- Drymocallis pseudorupestris (10 revisions)
- Elymus repens (10 revisions)
- Poaceae subfam. Ehrhartoideae (10 revisions)
- Mibora (10 revisions)
- Vaseyochloa (10 revisions)
- Paspalum vaginatum (10 revisions)
- Petrophytum caespitosum subsp. caespitosum (10 revisions)
- Panicum rigidulum subsp. abscissum (10 revisions)
- Chasmanthium latifolium (10 revisions)
- Schoenoplectus erectus (10 revisions)
- Turnera ulmifolia (10 revisions)
- Aristida californica (10 revisions)
- Verbascum lychnitis (10 revisions)
- Poa annua (10 revisions)
- Blepharoneuron (10 revisions)
- Carex deflexa (10 revisions)
- Zizania aquatica (10 revisions)
- Viola lobata (10 revisions)
- Bromus pacificus (10 revisions)
- Phalaris minor (10 revisions)
- Pluchea odorata (10 revisions)
- Paspalum plicatulum (10 revisions)
- Panicum sect. Antidotalia (10 revisions)
- Digitaria pubiflora (10 revisions)
- Polygonum ramosissimum (10 revisions)
- Kalmia microphylla (10 revisions)
- Poa arctica subsp. arctica (10 revisions)
- Muhlenbergia longiligula (10 revisions)
- Viola pedata (10 revisions)
- Croton glandulosus (10 revisions)
- Bromus madritensis (10 revisions)
- Limnodea (10 revisions)
- Sporobolus diandrus (10 revisions)
- Quercus kelloggii (10 revisions)
- Paspalum setaceum var. rigidifolium (10 revisions)
- Castilleja minor (10 revisions)
- Atriplex wolfii (10 revisions)
- Digitaria longiflora (10 revisions)
- Penstemon palmeri (10 revisions)
- Poa sect. Madropoa (10 revisions)
- Muhlenbergia sinuosa (10 revisions)
- Zizania palustris (10 revisions)
- Bromus danthoniae (10 revisions)
- Alopecurus aequalis (10 revisions)
- Distichlis (10 revisions)
- Physaria argyraea (10 revisions)
- Paspalum floridanum (10 revisions)
- Digitaria horizontalis (10 revisions)
- ×arctodupontia scleroclada (10 revisions)
- Carex norvegica (10 revisions)
- Poa diaboli (10 revisions)
- Chloris elata (10 revisions)
- ×leydeum dutillyanum (10 revisions)
- Saccharum baldwinii (10 revisions)
- Ferocactus hamatacanthus (10 revisions)
- Lasiacis (10 revisions)
- Briza media (10 revisions)
- Tetraneuris linearifolia (10 revisions)
- Poa leibergii (10 revisions)
- Chloris radiata (10 revisions)
- Festuca sect. Texanae (10 revisions)
- Potentilla sect. Pensylvanicae (10 revisions)
- Eremopyrum triticeum (10 revisions)
- Melica porteri var. porteri (10 revisions)
- Imperata cylindrica (10 revisions)
- Atriplex acanthocarpa (10 revisions)
- Echinochloa crus-pavonis var. macera (10 revisions)
- Sphenopholis nitida (10 revisions)
- Poa sect. Stenopoa (10 revisions)
- Trichloris pluriflora (10 revisions)
- Festuca sect. Breviaristatae (10 revisions)
- Ivesia arizonica (10 revisions)
- Aegilops crassa (10 revisions)
- Bambusa bambos (10 revisions)
- Sorghastrum secundum (10 revisions)
- Eragrostis pectinacea var. miserrima (10 revisions)
- Dichanthelium nodatum (10 revisions)
- Glyceria canadensis (10 revisions)
- Xylorhiza tortifolia (10 revisions)
- Poa abbreviata subsp. marshii (10 revisions)
- Cynodon transvaalensis (10 revisions)
- Festuca rubra subsp. commutata (10 revisions)
- Achnatherum thurberianum (10 revisions)
- Descurainia pinnata (10 revisions)
- Bothriochloa longipaniculata (10 revisions)
- Urochloa plantaginea (10 revisions)
- Malus ioensis (10 revisions)
- Dichanthelium sect. Oligosantha (10 revisions)
- Symphyotrichum lanceolatum (10 revisions)
- Poa ammophila (10 revisions)
- Luziola fluitans (10 revisions)
- Achnatherum aridum (10 revisions)
- Apluda mutica (10 revisions)
- Eriochloa lemmonii (10 revisions)
- Linum floridanum (10 revisions)
- Agrostis microphylla (10 revisions)
- Rudbeckia grandiflora (10 revisions)
- Pyrrocoma lanceolata (10 revisions)
- Bouteloua aristidoides (10 revisions)
- Achnatherum ×bloomeri (10 revisions)
- Andropogon gyrans var. gyrans (10 revisions)
- Pennisetum alopecuroides (10 revisions)
- Dichanthelium dichotomum subsp. microcarpon (10 revisions)
- Lagurus (10 revisions)
- Symphyotrichum foliaceum (10 revisions)
- Cirsium remotifolium (10 revisions)
- Bouteloua trifida var. burkii (10 revisions)
- Festuca washingtonica (10 revisions)
- Erigeron breweri (10 revisions)
- Pseudoroegneria spicata (10 revisions)
- Macrochloa (10 revisions)
- Actaea rubra (10 revisions)
- Braya humilis (10 revisions)
- Crepis modocensis (10 revisions)
- Molinia (10 revisions)
- Lechea pulchella (10 revisions)
- Cenchrus echinatus (10 revisions)
- Tiarella trifoliata (10 revisions)
- Phytolacca americana (10 revisions)
- Dichanthelium chamaelonche subsp. chamaelonche (10 revisions)
- Sesleria autumnalis (10 revisions)
- Cathestecum (10 revisions)
- Vulpia octoflora var. octoflora (10 revisions)
- Tridens flavus var. flavus (10 revisions)
- Elymus macgregorii (10 revisions)
- Piptochaetium (10 revisions)
- Calamagrostis cinnoides (10 revisions)
- Schizachyrium tenerum (10 revisions)
- Eragrostis gangetica (10 revisions)
- Castilleja applegatei (10 revisions)
- Heliomeris longifolia (10 revisions)
- Dichanthelium consanguineum (10 revisions)
- Parapholis strigosa (10 revisions)
- Tragus berteronianus (10 revisions)
- Lolium persicum (10 revisions)
- Sporobolus flexuosus (10 revisions)
- Elymus wiegandii (10 revisions)
- Nassella pulchra (10 revisions)
- Carex muehlenbergii (10 revisions)
- Calamagrostis perplexa (10 revisions)
- Setaria leucopila (10 revisions)
- Sarracenia rubra (10 revisions)
- Dryopteris expansa (10 revisions)
- Avenula hookeri (10 revisions)
- Silphium integrifolium (10 revisions)
- Cottea (10 revisions)
- Puccinellia lemmonii (10 revisions)
- Erioneuron pilosum (10 revisions)
- Duchesnea indica (10 revisions)
- Elymus multisetus (10 revisions)
- Heterotheca fulcrata (10 revisions)
- Austrostipa (10 revisions)
- Avena barbata (10 revisions)
- Eremochloa ophiuroides (10 revisions)
- Cirsium occidentale (10 revisions)
- Setaria viridis var. major (10 revisions)
- Arctomecon humilis (9 revisions)
- Ranunculus alismifolius var. hartwegii (9 revisions)
- Araceae Illustrations (9 revisions)
- Tamarix (9 revisions)
- Delphinium brachycentrum (9 revisions)
- Opuntia humifusa var. humifusa (9 revisions)
- Phegopteris (9 revisions)
- Asplenium serratum (9 revisions)
- Arachniodes simplicior (9 revisions)
- Solidago lepida subsp. fallax (9 revisions)
- Corydalis aurea subsp. aurea (9 revisions)
- Clematis drummondii (9 revisions)
- Brassicaceae Illustrations (9 revisions)
- Vancouveria hexandra (9 revisions)
- Opuntia chisosensis (9 revisions)
- Anemia adiantifolia (9 revisions)
- Coptis laciniata (9 revisions)
- Adiantum pedatum (9 revisions)
- Chelone lyonii (9 revisions)
- Ranunculus subg. Ceratocephala (9 revisions)
- Cannaceae Illustrations (9 revisions)
- Brosimum (9 revisions)
- Nuphar sagittifolia (9 revisions)
- Opuntia ellisiana (9 revisions)
- Petrophytum caespitosum subsp. acuminatum (9 revisions)
- Equisetum ×nelsonii (9 revisions)
- Pinus resinosa (9 revisions)
- Delphinium subsect. Subscaposa (9 revisions)
- Selaginella wallacei (9 revisions)
- Collinsia antonina (9 revisions)
- Ceratopteris richardii (9 revisions)
- Crossosomataceae Illustrations (9 revisions)
- Papaver rhoeas (9 revisions)
- Anemone occidentalis (9 revisions)
- Opuntia polyacantha var. hystricina (9 revisions)
- Pellaea ternifolia subsp. ternifolia (9 revisions)
- Atriplex subsect. Argenteae (9 revisions)
- Polystichum kwakiutlii (9 revisions)
- Carya glabra (9 revisions)
- Eriogonum flavum (9 revisions)
- Cystopteris protrusa (9 revisions)
- Collinsia corymbosa (9 revisions)
- Larix occidentalis (9 revisions)
- Papaver sect. Meconella (9 revisions)
- Portulaca halimoides (9 revisions)
- Droseraceae Illustrations (9 revisions)
- Anemone multifida var. multifida (9 revisions)
- Ranunculus subg. Ranunculus (9 revisions)
- Peniocereus (9 revisions)
- Portulaca suffrutescens (9 revisions)
- Carex aquatilis var. minor (9 revisions)
- Dryopteris marginalis (9 revisions)
- Astrolepis cochisensis subsp. chihuahuensis (9 revisions)
- Fumariaceae Illustrations (9 revisions)
- Pouzolzia (9 revisions)
- Quercus geminata (9 revisions)
- Berberis (9 revisions)
- Mollugo (9 revisions)
- Ceratopteris pteridoides (9 revisions)
- Argyrochosma fendleri (9 revisions)
- Carex media (9 revisions)
- Ficus benjamina (9 revisions)
- Osmundaceae (9 revisions)
- Laënnecia schiedeana (9 revisions)
- Thelypteris nevadensis (9 revisions)
- Carya ovata var. ovata (9 revisions)
- Hymenophyllaceae Illustrations (9 revisions)
- Ranunculus oresterus (9 revisions)
- Ranunculus allegheniensis (9 revisions)
- Myosurus nitidus (9 revisions)
- Boerhavia intermedia (9 revisions)
- Allionia (9 revisions)
- Pteridaceae (9 revisions)
- Pinus glabra (9 revisions)
- Parietaria praetermissa (9 revisions)
- Thelypteris interrupta (9 revisions)
- Betula pendula (9 revisions)
- Lemnaceae Illustrations (9 revisions)
- Podophyllum (9 revisions)
- Clematis bigelovii (9 revisions)
- Magnolia ashei (9 revisions)
- Pilosocereus robinii (9 revisions)
- Abronia angustifolia (9 revisions)
- Adiantum hispidulum (9 revisions)
- Clematis subg. Viorna (9 revisions)
- Callitris (9 revisions)
- Equisetum subg. Equisetum (9 revisions)
- Meesiaceae Illustrations (9 revisions)
- Corydalis caseana subsp. cusickii (9 revisions)
- Ostrya virginiana (9 revisions)
- Hexastylis arifolia var. ruthii (9 revisions)
- Astrophytum (9 revisions)
- Abronia nana var. covillei (9 revisions)
- Ophioglossum californicum (9 revisions)
- Argyrochosma dealbata (9 revisions)
- Carex heleonastes (9 revisions)
- Ranunculus acriformis var. montanensis (9 revisions)
- Ulmus parvifolia (9 revisions)
- Ivesia sect. Ivesia (9 revisions)
- Nyctaginaceae Illustrations (9 revisions)
- Ceratophyllum demersum (9 revisions)
- Hexastylis arifolia var. arifolia (9 revisions)
- Roemeria (9 revisions)
- Sclerocactus wrightiae (9 revisions)
- Aizoaceae (9 revisions)
- Ceratopteris (9 revisions)
- Jeffersonia diphylla (9 revisions)
- Eriogonum elatum (9 revisions)
- Ephedra californica (9 revisions)
- Ranunculus muricatus (9 revisions)
- Pinaceae Illustrations (9 revisions)
- Quercus robur (9 revisions)
- Ulmaceae (9 revisions)
- Carya floridana (9 revisions)
- Pellaea mucronata subsp. mucronata (9 revisions)
- Spergularia media (9 revisions)
- Myosurus minimus (9 revisions)
- Selaginella douglasii (9 revisions)
- Nelumbo lutea (9 revisions)
- Pseudoditrichaceae Illustrations (9 revisions)
- Delphinium patens subsp. hepaticoideum (9 revisions)
- Quercus laevis (9 revisions)
- Glaucium (9 revisions)
- Pediocactus simpsonii (9 revisions)
- Drosanthemum (9 revisions)
- Polystichum aleuticum (9 revisions)
- Botrychium rugulosum (9 revisions)
- Pedicularis oederi (9 revisions)
- Campyloneurum (9 revisions)
- Juncus vaseyi (9 revisions)
- Salicaceae Illustrations (9 revisions)
- Leitneria floridana (9 revisions)
- Quercus carmenensis (9 revisions)
- Ranunculus occidentalis var. hexasepalus (9 revisions)
- Coryphantha robustispina (9 revisions)
- Gisekia pharnacioides (9 revisions)
- Tectaria (9 revisions)
- Silene greenei subsp. angustifolia (9 revisions)
- Polystichum andersonii (9 revisions)
- Glaucium corniculatum (9 revisions)
- Pinus echinata (9 revisions)
- Nothocalaïs troximoides (9 revisions)
- Comptonia peregrina (9 revisions)
- Sphagnaceae Illustrations (9 revisions)
- Quercus chapmanii (9 revisions)
- Carya texana (9 revisions)
- Quercus garryana var. semota (9 revisions)
- Coryphantha vivipara (9 revisions)
- Cylindropuntia imbricata var. argentea (9 revisions)
- Selaginella viridissima (9 revisions)
- Carex conoidea (9 revisions)
- Alnus oblongifolia (9 revisions)
- Asplenium vespertinum (9 revisions)
- Rosaceae tribe Exochordeae (9 revisions)
- Thuidiaceae Illustrations (9 revisions)
- Ranunculus canus var. canus (9 revisions)
- Ranunculus triternatus (9 revisions)
- Corydalis curvisiliqua subsp. curvisiliqua (9 revisions)
- Ferocactus wislizeni (9 revisions)
- Grusonia (9 revisions)
- Pinus contorta var. latifolia (9 revisions)
- Dicentra canadensis (9 revisions)
- Juniperus deppeana var. deppeana (9 revisions)
- Coleogyne ramosissima (9 revisions)
- Carex chordorrhiza (9 revisions)
- Iris douglasiana (9 revisions)
- Ranunculus hystriculus (9 revisions)
- Licaria triandra (9 revisions)
- Archidiaceae Illustrations (9 revisions)
- Eschscholzia californica subsp. mexicana (9 revisions)
- Opuntia humifusa var. ammophila (9 revisions)
- Lomariopsis (9 revisions)
- Asplenium auritum (9 revisions)
- Atriplex sect. Teutliopsis (9 revisions)
- Quercus durata var. gabrielensis (9 revisions)
- Asplenium trichomanes-dentatum (9 revisions)
- Delphinium parryi (9 revisions)
- Fumaria vaillantii (9 revisions)
- Bromeliaceae Illustrations (9 revisions)
- Calycanthaceae (9 revisions)
- Aquilegia scopulorum (9 revisions)
- Opuntia atrispina (9 revisions)
- Juniperus monosperma (9 revisions)
- Betula populifolia (9 revisions)
- Eriogonum sphaerocephalum (9 revisions)
- Chelone glabra (9 revisions)
- Lithocarpus densiflorus var. echinoides (9 revisions)
- Ranunculus glacialis var. glacialis (9 revisions)
- Capparaceae Illustrations (9 revisions)
- Parietaria hespera var. hespera (9 revisions)
- Opuntia aureispina (9 revisions)
- Notholaena lemmonii (9 revisions)
- Atriplex subg. Obione (9 revisions)
- Quercus similis (9 revisions)
- Polystichum dudleyi (9 revisions)
- Collinsia parryi (9 revisions)
- Juniperus osteosperma (9 revisions)
- Carya cordiformis (9 revisions)
- Phemeranthus longipes (9 revisions)
- Cryphaeaceae Illustrations (9 revisions)
- Aquilegia flavescens (9 revisions)
- Opuntia polyacantha var. erinacea (9 revisions)
- Hymenophyllum tayloriae (9 revisions)
- Polystichum braunii (9 revisions)
- Delphinium parryi subsp. blochmaniae (9 revisions)
- Selaginella weatherbiana (9 revisions)
- Collinsia bartsiifolia (9 revisions)
- Portulaca oleracea (9 revisions)
- Dryopteridaceae Illustrations (9 revisions)
- Ostrya knowltonii (9 revisions)
- Meconella (9 revisions)
- Mirabilis linearis var. decipiens (9 revisions)
- Pellaea wrightiana (9 revisions)
- Diplazium esculentum (9 revisions)
- Asimina incana (9 revisions)
- Juncus acutus subsp. leopoldii (9 revisions)
- Keckiella antirrhinoides var. antirrhinoides (9 revisions)
- Alnus rhombifolia (9 revisions)
- Funariaceae Illustrations (9 revisions)
- Delphinium californicum subsp. interius (9 revisions)
- Berberis higginsiae (9 revisions)
- Argemone munita subsp. rotundata (9 revisions)
- Echinocereus bonkerae (9 revisions)
- Mollugo verticillata (9 revisions)
- Micranthes oregana (9 revisions)
- Pityrogramma trifoliata (9 revisions)
- Quercus chrysolepis (9 revisions)
- Botrychium crenulatum (9 revisions)
- Ranunculus (9 revisions)
- Hypericaceae Illustrations (9 revisions)
- Eschscholzia lemmonii subsp. lemmonii (9 revisions)
- Schisandra glabra (9 revisions)
- Echinocereus pseudopectinatus (9 revisions)
- Cheilanthes wrightii (9 revisions)
- Pentagramma triangularis subsp. semipallida (9 revisions)
- Cheilanthes villosa (9 revisions)
- Botrychium subg. Botrychium (9 revisions)
- Dorstenia (9 revisions)
- Leptodontaceae Illustrations (9 revisions)
- Aristolochia reticulata (9 revisions)
- Morus (9 revisions)
- Delphinium geyeri (9 revisions)
- Bergerocactus (9 revisions)
- Abronia turbinata (9 revisions)
- Lycopodium obscurum (9 revisions)
- Cheilanthes horridula (9 revisions)
- Hygroamblystegium varium var. varium (9 revisions)
- Weissia phascopsis (9 revisions)
- Draba lactea (9 revisions)
- Arida blepharophylla (9 revisions)
- Cheilanthes fendleri (9 revisions)
- Juncus hemiendytus (9 revisions)
- Arceuthobium campylopodum subsp. siskiyouense (9 revisions)
- Ranunculus marginatus (9 revisions)
- Menispermaceae Illustrations (9 revisions)
- Casuarina (9 revisions)
- Asimina longifolia var. spatulata (9 revisions)
- Boerhavia pterocarpa (9 revisions)
- Abronia bigelovii (9 revisions)
- Athyrium (9 revisions)
- Lomariopsis kunzeana (9 revisions)
- Clematis baldwinii (9 revisions)
- Nigella (9 revisions)
- Agave (9 revisions)
- Parkeriaceae (9 revisions)
- Clematis occidentalis var. grosseserrata (9 revisions)
- Nymphaeaceae Illustrations (9 revisions)
- Sclerocactus glaucus (9 revisions)
- Tetragonia (9 revisions)
- Tectaria heracleifolia (9 revisions)
- Elodium elodioides (9 revisions)
- Ivesia sect. Unguiculatae (9 revisions)
- Delphinium gypsophilum subsp. parviflorum (9 revisions)
- Piperaceae Illustrations (9 revisions)
- Stylophorum (9 revisions)
- Carpinus (9 revisions)
- Glandulicactus uncinatus var. wrightii (9 revisions)
- Aptenia (9 revisions)
- Botrychium dissectum (9 revisions)
- Trichomanes (9 revisions)
- Mikania batatifolia (9 revisions)
- Cabomba (9 revisions)
- Quercus engelmannii (9 revisions)
- Psilotaceae Illustrations (9 revisions)
- Papaver somniferum (9 revisions)
- Quercus ilicifolia (9 revisions)
- Castanea (9 revisions)
- Pediocactus knowltonii (9 revisions)
- Elatine (9 revisions)
- Drosanthemum floribundum (9 revisions)
- Callitris glaucophylla (9 revisions)
- Cheilanthes cooperae (9 revisions)
- Chenopodium opulifolium (9 revisions)
- Carex cumberlandensis (9 revisions)
- Celtis tenuifolia (9 revisions)
- Botrychium ascendens (9 revisions)
- Euphorbia (9 revisions)
- Eriogonum nutans (9 revisions)
- Ranunculus platensis (9 revisions)
- Salviniaceae Illustrations (9 revisions)
- Delphinium madrense (9 revisions)
- Pilea herniarioides (9 revisions)
- Delphinium glaucescens (9 revisions)
- Coryphantha echinus (9 revisions)
- Asplenium heterochroum (9 revisions)
- Zamia (9 revisions)
- Pilea (9 revisions)
- Abies bracteata (9 revisions)
- Eriogonum leptocladon (9 revisions)
- Anemone canadensis (9 revisions)
- Splachnaceae Illustrations (9 revisions)
- Enemion stipitatum (9 revisions)
- Corydalis caseana subsp. brachycarpa (9 revisions)
- Papaver nudicaule subsp. americanum (9 revisions)
- Cryptogramma (9 revisions)
- Ranunculus turneri (9 revisions)
- Pinus sylvestris var. sylvestris (9 revisions)
- Eriocaulon compressum (9 revisions)
- Eriogonum corymbosum (9 revisions)
- Erigeron uniflorus var. eriocephalus (9 revisions)
- Ranunculus uncinatus (9 revisions)
- Thymelaeaceae Illustrations (9 revisions)
- Achatocarpaceae Illustrations (9 revisions)
- Ferocactus viridescens (9 revisions)
- Phaulothamnus spinescens (9 revisions)
- Schoenocaulon dubium (9 revisions)
- Pteris cretica var. cretica (9 revisions)
- Pellaea bridgesii (9 revisions)
- Crataegus ×sicca (9 revisions)
- Canbya candida (9 revisions)
- Grammitis nimbata (9 revisions)
- Eriogonum thompsoniae (9 revisions)
- Quercus bicolor (9 revisions)
- Nuphar (9 revisions)
- Arecaceae Illustrations (9 revisions)
- Platanus occidentalis (9 revisions)
- Opuntia macrorhiza (9 revisions)
- Isoëtes lithophila (9 revisions)
- Pleopeltis astrolepis (9 revisions)
- Ranunculus gelidus (9 revisions)
- Juncus dubius (9 revisions)
- Fatoua villosa (9 revisions)
- Quercus (9 revisions)
- Bruchiaceae Illustrations (9 revisions)
- Piper auritum (9 revisions)
- Delphinium wootonii (9 revisions)
- Boerhavia diffusa (9 revisions)
- Taxus floridana (9 revisions)
- Aristolochia serpentaria (9 revisions)
- Thelypteris patens var. patens (9 revisions)
- Tradescantia wrightii (9 revisions)
- Schisandraceae (9 revisions)
- Delphinium scaposum (9 revisions)
- Caricaceae Illustrations (9 revisions)
- Licaria (9 revisions)
- Carya ovata var. australis (9 revisions)
- Thelypteris (9 revisions)
- Atriplex sect. Pleianthae (9 revisions)
- Polystichum (9 revisions)
- Clematis socialis (9 revisions)
- Isoëtes caroliniana (9 revisions)
- Collinsia callosa (9 revisions)
- Trematodon (9 revisions)
- Ranunculus lobbii (9 revisions)
- Phemeranthus marginatus (9 revisions)
- Cucurbitaceae Illustrations (9 revisions)
- Myrica heterophylla (9 revisions)
- Canbya aurea (9 revisions)
- Nopalea (9 revisions)
- Cheilanthes gracillima (9 revisions)
- Argemone chisosensis (9 revisions)
- Draba alpina (9 revisions)
- Notholaena (9 revisions)
- Isoëtes tegetiformans (9 revisions)
- Anemone caroliniana (9 revisions)
- Ebenaceae Illustrations (9 revisions)
- Saussurea angustifolia (9 revisions)
- Berberis pinnata subsp. pinnata (9 revisions)
- Delphinium andersonii (9 revisions)
- Peniocereus greggii var. greggii (9 revisions)
- Botrychium echo (9 revisions)
- Astrolepis (9 revisions)
- Berberis piperiana (9 revisions)
- Lycopodiella prostrata (9 revisions)
- Keckiella antirrhinoides var. microphylla (9 revisions)
- Aspleniaceae (9 revisions)
- Delphinium basalticum (9 revisions)
- Gigaspermaceae Illustrations (9 revisions)
- Juglandaceae (9 revisions)
- Berberis thunbergii (9 revisions)
- Corylus cornuta subsp. cornuta (9 revisions)
- Echinocereus fasciculatus (9 revisions)
- Mollugo cerviana (9 revisions)
- Sequoia sempervirens (9 revisions)
- Cypripedium parviflorum var. pubescens (9 revisions)
- Pecluma (9 revisions)
- Cuniculotinus (9 revisions)
- Pecluma plumula (9 revisions)
- Ranunculus austro-oreganus (9 revisions)
- Hypnaceae Illustrations (9 revisions)
- Eschscholzia glyptosperma (9 revisions)
- Delphinium purpusii (9 revisions)
- Ranunculus occidentalis var. howellii (9 revisions)
- Allionia incarnata var. incarnata (9 revisions)
- Pteridium aquilinum var. caudatum (9 revisions)
- Deparia petersenii (9 revisions)
- Leskeaceae Illustrations (9 revisions)
- Delphinium sect. Elatopsis (9 revisions)
- Quercus lyrata (9 revisions)
- Bergerocactus emoryi (9 revisions)
- Phytolacca icosandra (9 revisions)
- Cotoneaster ×suecicus (9 revisions)
- Cheilanthes wootonii (9 revisions)
- Woodsia obtusa subsp. occidentalis (9 revisions)
- Weissia ludoviciana (9 revisions)
- Delphinium bicolor subsp. bicolor (9 revisions)
- Athyrium filix-femina var. cyclosorum (9 revisions)
- Pellaea cordifolia (9 revisions)
- Trollius riederianus (9 revisions)
- Meteoriaceae Illustrations (9 revisions)
- Dicentra (9 revisions)
- Cinnamomum (9 revisions)
- Clematis fremontii (9 revisions)
- Astrophytum asterias (9 revisions)
- Abronia alpina (9 revisions)
- Thelypteris resinifera (9 revisions)
- Atriplex polycarpa (9 revisions)
- Picea rubens (9 revisions)
- Chenopodium simplex (9 revisions)
- Listera auriculata (9 revisions)
- Ranunculus subg. Batrachium (9 revisions)
- Myricaceae (9 revisions)
- Limnanthes sect. Inflexae (9 revisions)
- Polystichum californicum (9 revisions)
- Argemone pleiacantha subsp. pinnatisecta (9 revisions)
- Oedipodiaceae Illustrations (9 revisions)
- Delphinium patens subsp. montanum (9 revisions)
- Ficus (9 revisions)
- Sclerocactus brevispinus (9 revisions)
- Tetragonia tetragonioides (9 revisions)
- Isoëtes maritima (9 revisions)
- Scleranthus annuus (9 revisions)
- Pentagramma pallida (9 revisions)
- Delphinium bakeri (9 revisions)
- Polycarpon tetraphyllum (9 revisions)
- Anemiaceae (9 revisions)
- Nymphaea tetragona (9 revisions)
- Plagiotheciaceae Illustrations (9 revisions)
- Papaver pygmaeum (9 revisions)
- Thalictrum sect. Omalophysa (9 revisions)
- Clematis subg. Atragene (9 revisions)
- Boerhavia spicata (9 revisions)
- Aptenia cordifolia (9 revisions)
- Hypnum recurvatum (9 revisions)
- Brodiaea californica (9 revisions)
- Oncosiphon (9 revisions)
- Anemone narcissiflora var. villosissima (9 revisions)
- Salviniaceae (9 revisions)
- Ranunculus sect. Hecatonia (9 revisions)
- Pteridaceae Illustrations (9 revisions)
- Delphinium glareosum (9 revisions)
- Quercus marilandica (9 revisions)
- Papaver argemone (9 revisions)
- Pediocactus winkleri (9 revisions)
- Pinus albicaulis (9 revisions)
- Azolla mexicana (9 revisions)
- Cimicifuga elata (9 revisions)
- Sapotaceae Illustrations (9 revisions)
- Hesperocnide (9 revisions)
- Clematis ligusticifolia (9 revisions)
- Corydalis curvisiliqua subsp. grandibracteata (9 revisions)
- Coryphantha sulcata (9 revisions)
- Cylindropuntia fulgida var. fulgida (9 revisions)
- Pinus attenuata (9 revisions)
- Aquilegia chaplinei (9 revisions)
- Woodwardia virginica (9 revisions)
- Eriogonum spergulinum (9 revisions)
- Splachnobryaceae Illustrations (9 revisions)
- Coptis occidentalis (9 revisions)
- Asarum marmoratum (9 revisions)
- Delphinium treleasei (9 revisions)
- Neolloydia (9 revisions)
- Cylindropuntia californica var. californica (9 revisions)
- Juniperus occidentalis var. australis (9 revisions)
- Selaginella rupestris (9 revisions)
- Crataegus ×atrorubens (9 revisions)
- Anemone multifida var. saxicola (9 revisions)
- Pinus contorta var. contorta (9 revisions)
- Grimmia ramondii (9 revisions)
- Argemone aurantiaca (9 revisions)
- Timmiaceae Illustrations (9 revisions)
- Quercus mohriana (9 revisions)
- Humulus lupulus var. neomexicanus (9 revisions)
- Acoraceae Illustrations (9 revisions)
- Ulmus rubra (9 revisions)
- Ferocactus viridescens var. viridescens (9 revisions)
- Grusonia aggeria (9 revisions)
- Botrychium simplex (9 revisions)
- Delphinium decorum (9 revisions)
- Alnus incana subsp. tenuifolia (9 revisions)
- Laportea (9 revisions)
- Aristolochiaceae Illustrations (9 revisions)
- Betula uber (9 revisions)
- Opuntia pottsii (9 revisions)
- Pityrogramma (9 revisions)
- Pellaea mucronata subsp. californica (9 revisions)
- Thalictrum texanum (9 revisions)
- Eriophorum callitrix (9 revisions)
- Delphinium subsect. Bicoloria (9 revisions)
- Bryaceae Illustrations (9 revisions)
- Delphinium umbraculorum (9 revisions)
- Ranunculus eschscholtzii var. oxynotus (9 revisions)
- Opuntia santa-rita (9 revisions)
- Spiraea ×pyramidata (9 revisions)
- Isoëtes howellii (9 revisions)
- Atriplex sect. Sclerocalymma (9 revisions)
- Pilularia (9 revisions)
- Litsea (9 revisions)
- Dennstaedtia (9 revisions)
- Chelone obliqua var. obliqua (9 revisions)
- Niphotrichum pygmaeum (9 revisions)
- Delphinium nudicaule (9 revisions)
- Calycanthus (9 revisions)
- Caryophyllaceae Illustrations (9 revisions)
- Clematis morefieldii (9 revisions)
- Annona squamosa (9 revisions)
- Opuntia basilaris var. basilaris (9 revisions)
- Woodsia oregana subsp. cathcartiana (9 revisions)
- Stellaria borealis subsp. borealis (9 revisions)
- Polypodium calirhiza (9 revisions)
- Myrica cerifera (9 revisions)
- Woodwardia areolata (9 revisions)
- Laënnecia eriophylla (9 revisions)
- Sparganium hyperboreum (9 revisions)
- Argemone squarrosa subsp. squarrosa (9 revisions)
- Phemeranthus mengesii (9 revisions)
- Cupressaceae Illustrations (9 revisions)
- Trollius (9 revisions)
- Dendromecon rigida (9 revisions)
- Boerhavia anisophylla (9 revisions)
- Mirabilis oxybaphoides (9 revisions)
- Asplenium resiliens (9 revisions)
- Polystichum kruckebergii (9 revisions)
- Quercus grisea (9 revisions)
- Eriogonum ochrocephalum (9 revisions)
- Amphiachyris amoena (9 revisions)
- Thelypteris augescens (9 revisions)
- Delphinium uliginosum (9 revisions)
- Encalyptaceae Illustrations (9 revisions)
- Annona (9 revisions)
- Comptonia (9 revisions)
- Peniocereus greggii var. transmontanus (9 revisions)
- Portulaca umbraticola subsp. coronata (9 revisions)
- Isoëtes melanopoda (9 revisions)
- Microgramma (9 revisions)
- Hygrohypnum montanum (9 revisions)
- Delphinium variegatum subsp. variegatum (9 revisions)
- Pinus engelmannii (9 revisions)
- Tillandsia bartramii (9 revisions)
- Potentilla sect. Niveae (9 revisions)
- Keckiella cordifolia (9 revisions)
- Marsilea (9 revisions)
- Ranunculus orthorhynchus var. platyphyllus (9 revisions)
- Ginkgoaceae Illustrations (9 revisions)
- Papaveraceae (9 revisions)
- Ranunculus eschscholtzii var. eschscholtzii (9 revisions)
- Alnus rubra (9 revisions)
- Echinocereus engelmannii (9 revisions)
- Glinus (9 revisions)
- Psilotum nudum (9 revisions)
- Deparia (9 revisions)
- Cynodon nlemfuënsis (9 revisions)
- Delphinium parishii subsp. pallidum (9 revisions)
- Pinus virginiana (9 revisions)
- Abies amabilis (9 revisions)
- Anemone edwardsiana var. petraea (9 revisions)
- Hypopterygiaceae Illustrations (9 revisions)
- Cimicifuga laciniata (9 revisions)
- Aquilegia desertorum (9 revisions)
- Echinocereus rigidissimus var. rigidissimus (9 revisions)
- Allionia incarnata var. villosa (9 revisions)
- Isoëtes engelmannii (9 revisions)
- Tectaria incisa (9 revisions)
- Ranunculus canus var. ludovicianus (9 revisions)
- Trichomanes punctatum subsp. floridanum (9 revisions)
- Juncus hallii (9 revisions)
- Laënnecia coulteri (9 revisions)
- Botrychium subg. Osmundopteris (9 revisions)
- Aconitum reclinatum (9 revisions)
- Leucobryaceae Illustrations (9 revisions)
- Parietaria (9 revisions)
- Anemopsis (9 revisions)
- Calycocarpum lyonii (9 revisions)
- Pachycereus (9 revisions)
- Abronia pogonantha (9 revisions)
- Ephedra funerea (9 revisions)
- Isoëtes bolanderi (9 revisions)
- Carex incurviformis (9 revisions)
- Nelumbo (9 revisions)
- Pinus balfouriana (9 revisions)
- Lygodium japonicum (9 revisions)
- Eranthis hyemalis (9 revisions)
- Mielichhoferiaceae Illustrations (9 revisions)
- Ranunculus californicus var. californicus (9 revisions)
- Trema lamarckiana (9 revisions)
- Echinomastus (9 revisions)
- Tripterocalyx (9 revisions)
- Pleopeltis (9 revisions)
- Pinus palustris (9 revisions)
- Ranunculus macounii (9 revisions)
- Platanus wrightii (9 revisions)
- Selaginella uncinata (9 revisions)
- Ranunculus alismifolius var. davisii (9 revisions)
- Ophioglossaceae Illustrations (9 revisions)
- Laportea canadensis (9 revisions)
- Delphinium decorum subsp. tracyi (9 revisions)
- Sclerocactus wetlandicus (9 revisions)
- Rivina humilis (9 revisions)
- Pteris vittata (9 revisions)
- Asplenium adiantum-nigrum (9 revisions)
- Ranunculus subg. Pallasiantha (9 revisions)
- Juncus articulatus (9 revisions)
- Eriogonum esmeraldense (9 revisions)
- Selaginella braunii (9 revisions)
- Delphinium (9 revisions)
- Platanaceae Illustrations (9 revisions)
- Quercus imbricaria (9 revisions)
- Canellaceae (9 revisions)
- Ancistrocactus (9 revisions)
- Mesembryanthemum (9 revisions)
- Notholaena californica subsp. californica (9 revisions)
- Pinus edulis (9 revisions)
- Papaver macounii subsp. macounii (9 revisions)
- Polystichum lemmonii (9 revisions)
- Carex viridula var. viridula (9 revisions)
- Grimmia (9 revisions)
- Berberis haematocarpa (9 revisions)
- Pterigynandraceae Illustrations (9 revisions)
- Betula pubescens subsp. pubescens (9 revisions)
- Asimina longifolia var. longifolia (9 revisions)
- Cimicifuga (9 revisions)
- Pediocactus despainii (9 revisions)
- Cactaceae subfam. Pereskioideae (9 revisions)
- Polystichum setigerum (9 revisions)
- Pinus torreyana subsp. insularis (9 revisions)
- Celtis reticulata (9 revisions)
- Selaginella bigelovii (9 revisions)
- Tradescantia subacaulis (9 revisions)
- Luzula subg. Anthelaea (9 revisions)
- Hesperomecon (9 revisions)
- Sarraceniaceae Illustrations (9 revisions)
- Delphinium robustum (9 revisions)
- Berberis swaseyi (9 revisions)
- Betulaceae subfam. Betuloideae (9 revisions)
- Coryphantha tuberculosa (9 revisions)
- Cylindropuntia fulgida var. mamillata (9 revisions)
- Diplazium lonchophyllum (9 revisions)
- Cheiroglossa (9 revisions)
- Clematis lasiantha (9 revisions)
- Lygodium (9 revisions)
- Dicranella subulata (9 revisions)
- Calycocarpum (9 revisions)
- Staphyleaceae Illustrations (9 revisions)
- Ficus aurea (9 revisions)
- Thalictrum sect. Heterogamia (9 revisions)
- Neolloydia conoidea (9 revisions)
- Cylindropuntia californica var. parkeri (9 revisions)
- Donrichardsia macroneuron (9 revisions)
- Juniperus communis var. megistocarpa (9 revisions)
- Thelypteris tetragona (9 revisions)
- Crataegus ×bicknellii (9 revisions)
- Hexastylis shuttleworthii var. harperi (9 revisions)
- Erigeron humilis (9 revisions)
- Iris (sect. Limniris) ser. Vernae (9 revisions)
- Tropaeolaceae Illustrations (9 revisions)
- Cocculus (9 revisions)
- Anemone berlandieri (9 revisions)
- Agavaceae Illustrations (9 revisions)
- Asarum hartwegii (9 revisions)
- Grusonia grahamii (9 revisions)
- Botrychium mormo (9 revisions)
- Ficus americana (9 revisions)
- Selaginella mutica var. mutica (9 revisions)
- Sagittaria montevidensis subsp. calycina (9 revisions)
- Eriocaulon koernickianum (9 revisions)
- Platanus racemosa (9 revisions)
- Aconitum uncinatum (9 revisions)
- Aspleniaceae Illustrations (9 revisions)
- Delphinium glaucum (9 revisions)
- Opuntia tortispina (9 revisions)
- Asplenium verecundum (9 revisions)
- Pteridium aquilinum var. pseudocaudatum (9 revisions)
- Schoenoplectus acutus var. acutus (9 revisions)
- Ulmus pumila (9 revisions)
- Torreya taxifolia (9 revisions)
- Iris (sect. Limniris) ser. Hexagonae (9 revisions)
- Berberis fendleri (9 revisions)
- Papaver dubium (9 revisions)
- Bryoxiphiaceae Illustrations (9 revisions)
- Castanea ozarkensis (9 revisions)
- Nuphar rubrodisca (9 revisions)
- Opuntia macrocentra (9 revisions)
- Palhinhaea cernua (9 revisions)
- Aspidotis carlotta-halliae (9 revisions)
- Carex subspathacea (9 revisions)
- Pellaea lyngholmii (9 revisions)
- Chelone obliqua var. speciosa (9 revisions)
- Adlumia fungosa (9 revisions)
- Ranunculus occidentalis var. occidentalis (9 revisions)
- Casuarinaceae Illustrations (9 revisions)
- Lindera benzoin (9 revisions)
- Asarum canadense (9 revisions)
- Opuntia basilaris var. treleasei (9 revisions)
- Aquilegia elegantula (9 revisions)
- Eriogonum jamesii (9 revisions)
- Cheilanthes intertexta (9 revisions)
- Eriogonum rosense (9 revisions)
- Collinsia greenei (9 revisions)
- Pinus cembroides (9 revisions)
- Fumaria capreolata (9 revisions)
- Phemeranthus parviflorus (9 revisions)
- Cymodoceaceae Illustrations (9 revisions)
- Carya illinoinensis (9 revisions)
- Delphinium sect. Diedropetala (9 revisions)
- Nopalea cochenillifera (9 revisions)
- Pinus muricata (9 revisions)
- Pinus elliottii var. densa (9 revisions)
- Nymphaea odorata subsp. tuberosa (9 revisions)
- Juncus dichotomus (9 revisions)
- Aloe (9 revisions)
- Nephrolepis ×averyi (9 revisions)
- Umbellularia californica var. californica (9 revisions)
- Entodontaceae Illustrations (9 revisions)
- Thalictrum thalictroides (9 revisions)
- Peniocereus striatus (9 revisions)
- Portulaca umbraticola subsp. lanceolata (9 revisions)
- Pellaea ovata (9 revisions)
- Maxonia (9 revisions)
- Carex saxatilis (9 revisions)
- Ficus pumila (9 revisions)
- Eriogonum wrightii (9 revisions)
- Rhynchospora megaplumosa (9 revisions)
- Boehmeria (9 revisions)
- Gleicheniaceae Illustrations (9 revisions)
- Adlumia (9 revisions)
- Ranunculus inamoenus var. inamoenus (9 revisions)
- Echinocereus nicholii (9 revisions)
- Glinus radiatus (9 revisions)
- Dryopteris cinnamomea (9 revisions)
- Ranunculus trilobus (9 revisions)
- Pteridium (9 revisions)
- Phanerophlebia umbonata (9 revisions)
- Corydalis flavula (9 revisions)
- Illiciaceae Illustrations (9 revisions)
- Quercus ellipsoidalis (9 revisions)
- Quercus sinuata var. sinuata (9 revisions)
- Echinocereus poselgeri (9 revisions)
- Allionia choisyi (9 revisions)
- Ephedra aspera (9 revisions)
- Argyrochosma jonesii (9 revisions)
- Clematis virginiana (9 revisions)
- Cheilanthes viscida (9 revisions)
- Juncus cooperi (9 revisions)
- Woodsia (9 revisions)
- Ulmus thomasii (9 revisions)
- Leucodontaceae Illustrations (9 revisions)
- Jeffersonia (9 revisions)
- Pachycereus schottii (9 revisions)
- Notholaena greggii (9 revisions)
- Isoëtes georgiana (9 revisions)
- Rhinanthus minor subsp. minor (9 revisions)
- Berberis pumila (9 revisions)
- Argyrochosma (9 revisions)
- Juniperus californica (9 revisions)
- Achlys triphylla (9 revisions)
- Mniaceae Illustrations (9 revisions)
- Dicentra nevadensis (9 revisions)
- Ranunculus rhomboideus (9 revisions)
- Clematis recta (9 revisions)
- Echinomastus johnsonii (9 revisions)
- Mentzelia nuda (9 revisions)
- Tripterocalyx micranthus (9 revisions)
- Ephedra pedunculata (9 revisions)
- Ophioglossum pusillum (9 revisions)
- Asimina pygmaea (9 revisions)
- Planera (9 revisions)
- Juncus debilis (9 revisions)
- Equisetum laevigatum (9 revisions)
- Trollius albiflorus (9 revisions)
- Orchidaceae Illustrations (9 revisions)
- Ostrya (9 revisions)
- Anemone deltoidea (9 revisions)
- Romneya trichocalyx (9 revisions)
- Galenia (9 revisions)
- Anemia (9 revisions)
- Scleranthus perennis (9 revisions)
- Ephedra nevadensis (9 revisions)
- Corydalis micrantha subsp. micrantha (9 revisions)
- Eriogonum strictum (9 revisions)
- Selaginella acanthonota (9 revisions)
- Pleuroziopsaceae Illustrations (9 revisions)
- Betulaceae subfam. Coryloideae (9 revisions)
- Carya pallida (9 revisions)
- Nuphar polysepala (9 revisions)
- Ancistrocactus brevihamatus (9 revisions)
- Mesembryanthemum crystallinum (9 revisions)
- Pilea trianthemoides (9 revisions)
- Selaginella densa (9 revisions)
- Sanguinaria canadensis (9 revisions)
- Pterobryaceae Illustrations (9 revisions)
- Quercus laurifolia (9 revisions)
- Ranunculus ambigens (9 revisions)
- Thelocactus (9 revisions)
- Gisekia (9 revisions)
- Zamia integrifolia (9 revisions)
- Mirabilis sect. Quamoclidion (9 revisions)
- Thelypteris subg. Stegnogramma (9 revisions)
- Aristolochia (9 revisions)
- Eriogonum longifolium (9 revisions)
- Cheilanthes arizonica (9 revisions)
- Enemion (9 revisions)
- Saururaceae Illustrations (9 revisions)
- Dicentra eximia (9 revisions)
- Canbya (9 revisions)
- Boerhavia coulteri var. coulteri (9 revisions)
- Cylindropuntia ×kelvinensis (9 revisions)
- Thelypteris pilosa var. alabamensis (9 revisions)
- Ephedra torreyana (9 revisions)
- Delphinium patens subsp. patens (9 revisions)
- Botrychium paradoxum (9 revisions)
- Stemonaceae Illustrations (9 revisions)
- Ranunculus populago (9 revisions)
- Delphinium ramosum (9 revisions)
- Platanus (9 revisions)
- Neolloydia conoidea var. conoidea (9 revisions)
- Cylindropuntia abyssi (9 revisions)
- Abies fraseri (9 revisions)
- Juniperus sect. Sabina (9 revisions)
- Crataegus ×coleae (9 revisions)
- Rumex sect. Rumex (9 revisions)
- Juglans (9 revisions)
- Abies (9 revisions)
- Stipulicida setacea (9 revisions)
- Celtis occidentalis (9 revisions)
- Turneraceae Illustrations (9 revisions)
- Thalictrum polycarpum (9 revisions)
- Quercus phellos (9 revisions)
- Aizoaceae Illustrations (9 revisions)
- Roemeria refracta (9 revisions)
- Grusonia emoryi (9 revisions)
- Pinus torreyana subsp. torreyana (9 revisions)
- Acrostichum aureum (9 revisions)
- Ranunculus sect. Echinella (9 revisions)
- Juncus subg. Septati (9 revisions)
- Stuckenia striata (9 revisions)
- Quercus nigra (9 revisions)
- Eschscholzia caespitosa (9 revisions)
- Opuntia stricta (9 revisions)
- Eichhornia crassipes (9 revisions)
- Larix lyallii (9 revisions)
- Humulus lupulus var. lupulus (9 revisions)
- Fothergilla gardenii (9 revisions)
- Burmanniaceae Illustrations (9 revisions)
- Humulus japonicus (9 revisions)
- Opuntia phaeacantha (9 revisions)
- Woodsia scopulina subsp. appalachiana (9 revisions)
- Aquilegia formosa var. truncata (9 revisions)
- Pinus leiophylla var. chihuahuana (9 revisions)
- Oxytheca dendroidea (9 revisions)
- Chelone obliqua var. erwiniae (9 revisions)
- Corydalis caseana subsp. hastata (9 revisions)
- Delphinium subsect. Multiplex (9 revisions)
- Catoscopiaceae Illustrations (9 revisions)
- Opuntia basilaris var. longiareolata (9 revisions)
- Selaginella lepidophylla (9 revisions)
- Rudbeckia texana (9 revisions)
- Peperomia glabella (9 revisions)
- Erigeron strigosus var. septentrionalis (9 revisions)
- Malpighiaceae (9 revisions)
- Collinsia linearis (9 revisions)
- Diplazium (9 revisions)
- Moraceae (9 revisions)
- Phemeranthus rugospermus (9 revisions)
- Cyperaceae Illustrations (9 revisions)
- Parietaria hespera var. californica (9 revisions)
- Eschscholzia lemmonii (9 revisions)
- Consolea (9 revisions)
- Juniperus scopulorum (9 revisions)
- Atriplex argentea var. longitrichoma (9 revisions)
- Selaginella eremophila (9 revisions)
- Clematis occidentalis var. occidentalis (9 revisions)
- Cheilanthes lindheimeri (9 revisions)
- Potentilla sect. Aureae (9 revisions)
- Isoëtes riparia (9 revisions)
- Hexastylis arifolia var. callifolia (9 revisions)
- Ephedraceae Illustrations (9 revisions)
- Caltha (9 revisions)
- Talinopsis (9 revisions)
- Notholaena californica subsp. leucophylla (9 revisions)
- Thelypteris subg. Lastrea (9 revisions)
- Adonis annua (9 revisions)
- Grammitis (9 revisions)
- Laënnecia turnerorum (9 revisions)
- Dennstaedtia globulifera (9 revisions)
- Fumaria officinalis (9 revisions)
- Grammitidaceae Illustrations (9 revisions)
- Aquilegia vulgaris (9 revisions)
- Ranunculus andersonii (9 revisions)
- Berberis repens (9 revisions)
- Boerhavia erecta (9 revisions)
- Glinus lotoides (9 revisions)
- Abies concolor (9 revisions)
- Cheilanthes eatonii (9 revisions)
- Delphinium variegatum (9 revisions)
- Botrychium montanum (9 revisions)
- Guzmania (9 revisions)
- Polypodium hesperium (9 revisions)
- Peperomia alata (9 revisions)
- Iridaceae Illustrations (9 revisions)
- Eranthis (9 revisions)
- Delphinium inopinum (9 revisions)
- Hylocereus (9 revisions)
- Abronia (9 revisions)
- Isoëtes louisianensis (9 revisions)
- Botrychium campestre (9 revisions)
- Myrica (9 revisions)
- Cyrtomium falcatum (9 revisions)
- Ranunculus occidentalis var. ultramontanus (9 revisions)
- Leucophanaceae Illustrations (9 revisions)
- Quercus pumila (9 revisions)
- Delphinium subsect. Virescens (9 revisions)
- Ranunculus gormanii (9 revisions)
- Carnegiea (9 revisions)
- Abronia villosa var. villosa (9 revisions)
- Thelypteris ovata var. ovata (9 revisions)
- Ptychostomum pseudotriquetrum (9 revisions)
- Delphinium hutchinsoniae (9 revisions)
- Pteris (9 revisions)
- Krameria lanceolata (9 revisions)
- Eriogonum atrorubens (9 revisions)
- Pinus strobiformis (9 revisions)
- Aristolochia californica (9 revisions)
- Molluginaceae Illustrations (9 revisions)
- Peperomia (9 revisions)
- Nelumbonaceae (9 revisions)
- Delphinium bicolor subsp. calcicola (9 revisions)
- Echinomastus erectocentrus (9 revisions)
- Tripterocalyx carneus (9 revisions)
- Isoëtes prototypus (9 revisions)
- Ophioglossum petiolatum (9 revisions)
- Sphagnum platyphyllum (9 revisions)
- Ranunculus bonariensis var. trisepalus (9 revisions)
- Hymenophyllum tunbrigense (9 revisions)
- Orthodontiaceae Illustrations (9 revisions)
- Quercus douglasii (9 revisions)
- Delphinium carolinianum subsp. virescens (9 revisions)
- Quercus austrina (9 revisions)
- Galenia pubescens (9 revisions)
- Cheilanthes lanosa (9 revisions)
- Cheilanthes tomentosa (9 revisions)
- Argemone arizonica (9 revisions)
- Agave utahensis var. eborispina (9 revisions)
- Odontosoria (9 revisions)
- Delphinium alabamicum (9 revisions)
- Plumbaginaceae Illustrations (9 revisions)
- Eschscholzia lemmonii subsp. kernensis (9 revisions)
- Aconitum (9 revisions)
- Celtis pallida (9 revisions)
- Ancistrocactus scheeri (9 revisions)
- Mesembryanthemum nodiflorum (9 revisions)
- Diphasiastrum tristachyum (9 revisions)
- Ephedra coryi (9 revisions)
- Grimmia plagiopodia (9 revisions)
- Annona glabra (9 revisions)
- Ptychomitriaceae Illustrations (9 revisions)
- Urtica (9 revisions)
- Aristolochia coryi (9 revisions)
- Quercus tardifolia (9 revisions)
- Thelocactus bicolor (9 revisions)
- Pereskia (9 revisions)
- Thuja plicata (9 revisions)
- Botrychium pallidum (9 revisions)
- Argemone sanguinea (9 revisions)
- Isoëtes tuckermanii (9 revisions)
- Cyperus laevigatus (9 revisions)
- Anemone narcissiflora var. monantha (9 revisions)
- Saxifragaceae Illustrations (9 revisions)
- Eschscholzia hypecoides (9 revisions)
- Lechea san-sabeana (9 revisions)
- Quercus john-tuckeri (9 revisions)
- Coryphantha robertii (9 revisions)
- Cylindropuntia prolifera (9 revisions)
- Argemone corymbosa subsp. corymbosa (9 revisions)
- Polypodium amorphum (9 revisions)
- Tephroseris lindstroemii (9 revisions)
- Stereophyllaceae Illustrations (9 revisions)
- Anemone quinquefolia var. quinquefolia (9 revisions)
- Aquilegia coerulea var. pinetorum (9 revisions)
- Fatoua (9 revisions)
- Epithelantha (9 revisions)
- Cylindropuntia munzii (9 revisions)
- Marsilea macropoda (9 revisions)
- Cystopteris laurentiana (9 revisions)
- Crataegus ×collicola (9 revisions)
- Rumex hymenosepalus (9 revisions)
- Morus microphylla (9 revisions)
- Dryopteridaceae (9 revisions)
- Juncus parryi (9 revisions)
- Alnus maritima (9 revisions)
- Typhaceae Illustrations (9 revisions)
- Liriodendron tulipifera (9 revisions)
- Thalictrum heliophilum (9 revisions)
- Alismataceae Illustrations (9 revisions)
- Nandina domestica (9 revisions)
- Grusonia schottii (9 revisions)
- Astrolepis windhamii (9 revisions)
- Tsuga heterophylla (9 revisions)
- Heterocladium procurrens (9 revisions)
- Crataegus ×vailiae (9 revisions)
- Illicium parviflorum (9 revisions)
- Thelypteris subg. Parathelypteris (9 revisions)
- Betula pubescens subsp. tortuosa (9 revisions)
- Humulus lupulus var. lupuloides (9 revisions)
- Aulacomniaceae Illustrations (9 revisions)
- Castanea pumila (9 revisions)
- Opuntia chlorotica (9 revisions)
- Erythranthe suksdorfii (9 revisions)
- Juniperus virginiana var. virginiana (9 revisions)
- Umbellularia californica var. fresnensis (9 revisions)
- Asplenium scolopendrium var. americanum (9 revisions)
- Sagittaria platyphylla (9 revisions)
- Quercus hemisphaerica (9 revisions)
- Aquilegia shockleyi (9 revisions)
- Butomaceae Illustrations (9 revisions)
- Magnolia macrophylla (9 revisions)
- Ranunculus flammula var. ovalis (9 revisions)
- Opuntia ×curvispina (9 revisions)
- Cheilanthes (9 revisions)
- Notholaena nealleyi (9 revisions)
- Humulus (9 revisions)
- Pilularia americana (9 revisions)
- Chionophila (9 revisions)
- Clematis versicolor (9 revisions)
- Berberis bealei (9 revisions)
- Ceratophyllaceae Illustrations (9 revisions)
- Arctomecon californica (9 revisions)
- Delphinium hesperium subsp. cuyamacae (9 revisions)
- Opuntia basilaris var. brachyclada (9 revisions)
- Adiantum (9 revisions)
- Hypolepis repens (9 revisions)
- Anemone cylindrica (9 revisions)
- Botrychium boreale (9 revisions)
- Erigeron strigosus var. strigosus (9 revisions)
- Nemacaulis denudata (9 revisions)
- Collinsia rattanii (9 revisions)
- Isoëtes (9 revisions)
- Quercus georgiana (9 revisions)
- Phemeranthus sediformis (9 revisions)
- Cyrillaceae Illustrations (9 revisions)
- Ranunculus subg. Cyrtorhyncha (9 revisions)
- Anemone virginiana var. cylindroidea (9 revisions)
- Consolea corallicola (9 revisions)
- Arctostaphylos (9 revisions)
- Pellaea (9 revisions)
- Isoëtes nuttallii (9 revisions)
- Argemone aenea (9 revisions)
- Juncus chlorocephalus (9 revisions)
- Lorandersonia (9 revisions)
- Selaginella subg. Tetragonostachys (9 revisions)
- Ranunculus sceleratus var. multifidus (9 revisions)
- Ephemeraceae Illustrations (9 revisions)
- Aquilegia laramiensis (9 revisions)
- Delphinium depauperatum (9 revisions)
- Echinocereus enneacanthus (9 revisions)
- Talinopsis frutescens (9 revisions)
- Selaginella arizonica (9 revisions)
- Lygodium palmatum (9 revisions)
- Cissampelos pareira (9 revisions)
- Selaginella cinerascens (9 revisions)
- Argyrochosma microphylla (9 revisions)
- Betula alleghaniensis (9 revisions)
- Grimmiaceae Illustrations (9 revisions)
- Anemone virginiana var. alba (9 revisions)
- Aconitum maximum subsp. maximum (9 revisions)
- Echinocereus ledingii (9 revisions)
- Mirabilis rotundifolia (9 revisions)
- Thelypteris subg. Goniopteris (9 revisions)
- Dicranopteris (9 revisions)
- Eschscholzia minutiflora (9 revisions)
- Chrysothamnus scopulorum (9 revisions)
- Pinaceae (9 revisions)
- Anemone lancifolia (9 revisions)
- Isoëtaceae Illustrations (9 revisions)
- Diphylleia cymosa (9 revisions)
- Delphinium antoninum (9 revisions)
- Hylocereus undatus (9 revisions)
- Abronia fragrans (9 revisions)
- Mammillaria wrightii var. wilcoxii (9 revisions)
- Abies grandis (9 revisions)
- Ceratophyllum (9 revisions)
- Solidago multiradiata (9 revisions)
- Selaginella mutica var. limitanea (9 revisions)
- Ranunculus jovis (9 revisions)
- Liliaceae Illustrations (9 revisions)
- Ranunculus sect. Cyrtorhyncha (9 revisions)
- Trollius laxus (9 revisions)
- Boerhavia megaptera (9 revisions)
- Abronia villosa var. aurita (9 revisions)
- Pleopeltis polylepis var. erythrolepis (9 revisions)
- Bommeria hispida (9 revisions)
- Anemone tuberosa (9 revisions)
- Xylorhiza (9 revisions)
- Torreya californica (9 revisions)
- Moraceae Illustrations (9 revisions)
- Quercus durata (9 revisions)
- Menispermum canadense (9 revisions)
- Echinomastus erectocentrus var. erectocentrus (9 revisions)
- Tripterocalyx wootonii (9 revisions)
- Selaginella scopulorum (9 revisions)
- Oönopsis engelmannii (9 revisions)
- Corydalis aqua-gelidae (9 revisions)
- Hymenophyllum wrightii (9 revisions)
- Argemone corymbosa subsp. arenicola (9 revisions)
- Orthotrichaceae Illustrations (9 revisions)
- Clematis subg. Viticella (9 revisions)
- Lindera subcoriacea (9 revisions)
- Quercus tomentella (9 revisions)
- Sclerocactus mesae-verdae (9 revisions)
- Galenia secunda (9 revisions)
- Dennstaedtia bipinnata (9 revisions)
- Equisetum ramosissimum subsp. ramosissimum (9 revisions)
- Aquilegia longissima (9 revisions)
- Aristolochia wrightii (9 revisions)
- Poaceae Illustrations (9 revisions)
- Corydalis micrantha subsp. australis (9 revisions)
- Delphinium tricorne (9 revisions)
- Argemone gracilenta (9 revisions)
- Pediocactus (9 revisions)
- Carpobrotus (9 revisions)
- Polystichum imbricans subsp. curtum (9 revisions)
- Callirhoë (9 revisions)
- Quercus garryana var. garryana (9 revisions)
- Ginkgoaceae (9 revisions)
- Grimmia anodon (9 revisions)
- Papaver (9 revisions)
- Racopilaceae Illustrations (9 revisions)
- Eschscholzia (9 revisions)
- Vancouveria chrysantha (9 revisions)
- Thelocactus bicolor var. bicolor (9 revisions)
- Pereskia aculeata (9 revisions)
- Selaginella rupincola (9 revisions)
- Cystopteris reevesiana (9 revisions)
- Clematis columbiana var. tenuiloba (9 revisions)
- Pinus coulteri (9 revisions)
- Scheuchzeriaceae Illustrations (9 revisions)
- Delphinium elatum (9 revisions)
- Brasenia schreberi (9 revisions)
- Coryphantha chaffeyi (9 revisions)
- Cylindropuntia versicolor (9 revisions)
- Thelypteris ovata var. lindheimeri (9 revisions)
- Nephrolepis cordifolia (9 revisions)
- Quercus turbinella (9 revisions)
- Botrychium hesperium (9 revisions)
- Thalictrum cooleyi (9 revisions)
- Styracaceae Illustrations (9 revisions)
- Adonis vernalis (9 revisions)
- Aquilegia formosa var. formosa (9 revisions)
- Phaulothamnus (9 revisions)
- Botrychium pseudopinnatum (9 revisions)
- Crataegus ×disperma (9 revisions)
- Fagaceae (9 revisions)
- Ulmaceae Illustrations (9 revisions)
- Clematis hirsutissima var. scottii (9 revisions)
- Ranunculus fascicularis (9 revisions)
- Aloaceae Illustrations (9 revisions)
- Papaver gorodkovii (9 revisions)
- Grusonia kunzei (9 revisions)
- Botrychium lanceolatum subsp. angustisegmentum (9 revisions)
- Asplenium adulterinum (9 revisions)
- Thalictrum dioicum (9 revisions)
- Asarum caudatum (9 revisions)
- Pentagramma (9 revisions)
- Juncus secundus (9 revisions)
- Thalictrum sect. Physocarpum (9 revisions)
- Ranunculus acriformis var. acriformis (9 revisions)
- Azollaceae Illustrations (9 revisions)
- Quercus coccinea (9 revisions)
- Boerhavia (9 revisions)
- Carex fuliginosa (9 revisions)
- Ranunculus californicus var. cuneatus (9 revisions)
- Huperzia (9 revisions)
- Bucklandiella macounii subsp. alpina (9 revisions)
- Hydrastis canadensis (9 revisions)
- Buxbaumiaceae Illustrations (9 revisions)
- Delphinium distichum (9 revisions)
- Ranunculus testiculatus (9 revisions)
- Opuntia ×spinosibacca (9 revisions)
- Woodsia plummerae (9 revisions)
- Atriplex sect. Spongiocarpus (9 revisions)
- Astrolepis cochisensis subsp. cochisensis (9 revisions)
- Liquidambar styraciflua (9 revisions)
- Eriogonum douglasii (9 revisions)
- Nephrolepis multiflora (9 revisions)
- Chionophila jamesii (9 revisions)
- Ranunculus arizonicus var. arizonicus (9 revisions)
- Carya (9 revisions)
- Chenopodiaceae Illustrations (9 revisions)
- Quercus fusiformis (9 revisions)
- Casuarina cunninghamiana subsp. cunninghamiana (9 revisions)
- Opuntia aurea (9 revisions)
- Cheilanthes feei (9 revisions)
- Sequoia (9 revisions)
- Peperomia pellucida (9 revisions)
- Anemia mexicana (9 revisions)
- Ranunculus auricomus (9 revisions)
- Phemeranthus spinescens (9 revisions)
- Daltoniaceae Illustrations (9 revisions)
- Urtica dioica subsp. holosericea (9 revisions)
- Cactaceae subfam. Cactoideae (9 revisions)
- Cryptogramma cascadensis (9 revisions)
- Stellaria longipes subsp. longipes (9 revisions)
- Isoëtes virginica (9 revisions)
- Delphinium parryi subsp. maritimum (9 revisions)
- Pentagramma triangularis (9 revisions)
- Lorandersonia baileyi (9 revisions)
- Collinsia heterophylla (9 revisions)
- Polytrichum commune var. perigoniale (9 revisions)
- Pseudotsuga macrocarpa (9 revisions)
- Quercus durata var. durata (9 revisions)
- Equisetaceae Illustrations (9 revisions)
- Delphinium menziesii subsp. menziesii (9 revisions)
- Trema (9 revisions)
- Echinocereus enneacanthus var. enneacanthus (9 revisions)
- Talinum (9 revisions)
- Pinus lambertiana (9 revisions)
- Pellaea ternifolia subsp. villosa (9 revisions)
- Thalictrum venulosum (9 revisions)
- Pinus washoensis (9 revisions)
- Picea pungens (9 revisions)
- Clematis ochroleuca (9 revisions)
- Grossulariaceae Illustrations (9 revisions)
- Delphinium gypsophilum subsp. gypsophilum (9 revisions)
- Delphinium viridescens (9 revisions)
- Argemone munita subsp. argentea (9 revisions)
- Echinocereus triglochidiatus (9 revisions)
- Mirabilis gigantea (9 revisions)
- Athyrium filix-femina var. asplenioides (9 revisions)
- Papaver hybridum (9 revisions)
- Pentagramma triangularis subsp. viscosa (9 revisions)
- Chrysothamnus stylosus (9 revisions)
- Pinus monticola (9 revisions)
- Actaea pachypoda (9 revisions)
- Iteaceae Illustrations (9 revisions)
- Romneya (9 revisions)
- Papaver alboroseum (9 revisions)
- Selenicereus (9 revisions)
- Phytolacca heterotepala (9 revisions)
- Adiantum aleuticum (9 revisions)
- Minuartia obtusiloba (9 revisions)
- Aconitum columbianum subsp. viviparum (9 revisions)
- Dennstaedtia punctilobula (9 revisions)
- Carex timida (9 revisions)
- Blechnum spicant (9 revisions)
- Argemone munita subsp. munita (9 revisions)
- Limnanthaceae Illustrations (9 revisions)
- Asimina tetramera (9 revisions)
- Magnolia pyramidata (9 revisions)
- Consolida ajacis (9 revisions)
- Carnegiea gigantea (9 revisions)
- Abronia ammophila (9 revisions)
- Equisetum ×mackaii (9 revisions)
- Chamaecyparis (9 revisions)
- Morus rubra (9 revisions)
- Polypodium (9 revisions)
- Clematis pitcheri var. pitcheri (9 revisions)
- Moringaceae Illustrations (9 revisions)
- Pilea microphylla (9 revisions)
- Quercus hypoleucoides (9 revisions)
- Ranunculus sardous (9 revisions)
- Echinomastus erectocentrus var. acunensis (9 revisions)
- Tripterocalyx crux-maltae (9 revisions)
- Matteuccia struthiopteris var. pensylvanica (9 revisions)
- Asplenium bradleyi (9 revisions)
- Delphinium californicum (9 revisions)
- Delphinium luteum (9 revisions)
- Ptychosperma (9 revisions)
- Cheilanthes leucopoda (9 revisions)
- Vancouveria (9 revisions)
- Osmundaceae Illustrations (9 revisions)
- Cocculus carolinus (9 revisions)
- Delphinium variegatum subsp. thornei (9 revisions)
- Myosurus (9 revisions)
- Boerhavia purpurascens (9 revisions)
- Sesuvium (9 revisions)
- Warnstorfia fluitans (9 revisions)
- Neurodium (9 revisions)
- Podostemaceae Illustrations (9 revisions)
- Carya myristiciformis (9 revisions)
- Hexastylis (9 revisions)
- Pediocactus sileri (9 revisions)
- Carpobrotus chilensis (9 revisions)
- Diphasiastrum digitatum (9 revisions)
- Selaginella arenicola subsp. riddellii (9 revisions)
- Callirhoë digitata (9 revisions)
- Anemone lyallii (9 revisions)
- Schizaea (9 revisions)
- Grimmia americana (9 revisions)
- Delphinium novomexicanum (9 revisions)
- Ranunculaceae Illustrations (9 revisions)
- Aquilegia (9 revisions)
- Thelocactus bicolor var. flavidispinus (9 revisions)
- Cheilanthes yavapensis (9 revisions)
- Marsilea mollis (9 revisions)
- Prosartes maculata (9 revisions)
- Ranunculus pacificus (9 revisions)
- Paronychia fastigiata (9 revisions)
- Athyrium filix-femina var. californicum (9 revisions)
- Delphinium carolinianum subsp. vimineum (9 revisions)
- Schisandraceae Illustrations (9 revisions)
- Betula lenta (9 revisions)
- Quercus prinoides (9 revisions)
- Leitneria (9 revisions)
- Coryphantha dasyacantha (9 revisions)
- Trichomanes krausii (9 revisions)
- Sassafras (9 revisions)
- Actinostachys pennula (9 revisions)
- Rudbeckia klamathensis (9 revisions)
- Quercus palustris (9 revisions)
- Symplocaceae Illustrations (9 revisions)
- Quercus polymorpha (9 revisions)
- Delphinium parryi subsp. eastwoodiae (9 revisions)
- Epithelantha micromeris var. micromeris (9 revisions)
- Cylindropuntia ganderi (9 revisions)
- Dryopteris filix-mas (9 revisions)
- Phlegmariurus dichotomus (9 revisions)
- Crataegus ×dispessa (9 revisions)
- Ranunculus sect. Epirotes (9 revisions)
- Gymnocarpium disjunctum (9 revisions)
- Piper aduncum (9 revisions)
- Iris (sect. Limniris) ser. Tripetalae (9 revisions)
- Urticaceae Illustrations (9 revisions)
- Ranunculus inamoenus var. subaffinis (9 revisions)
- Morus alba (9 revisions)
- Amaranthaceae Illustrations (9 revisions)
- Thalictrum mirabile (9 revisions)
- Pterostegia (9 revisions)
- Grusonia clavata (9 revisions)
- Isoëtes acadiensis (9 revisions)
- Dennstaedtiaceae (9 revisions)
- Clematis hirsutissima var. hirsutissima (9 revisions)
- Thelypteris subg. Amauropelta (9 revisions)
- Nuphar advena (9 revisions)
- Pilea pumila (9 revisions)
- Bartramiaceae Illustrations (9 revisions)
- Lithocarpus (9 revisions)
- Delphinium multiplex (9 revisions)
- Opuntia strigil (9 revisions)
- Cupressus (9 revisions)
- Delphinium subsect. Elata (9 revisions)
- Actinostachys (9 revisions)
- Hippuris (9 revisions)
- Bucklandiella occidentalis (9 revisions)
- Clematis coactilis (9 revisions)
- Dicentra formosa subsp. formosa (9 revisions)
- Cabombaceae Illustrations (9 revisions)
- Ulmus americana (9 revisions)
- Opuntia oricola (9 revisions)
- Thelypteris subg. Thelypteris (9 revisions)
- Actaea (9 revisions)
- Isoëtes boomii (9 revisions)
- Thelypteris reptans (9 revisions)
- Coptis (9 revisions)
- Ranunculus alismifolius var. montanus (9 revisions)
- Cistaceae Illustrations (9 revisions)
- Argemone mexicana (9 revisions)
- Betula (9 revisions)
- Boerhavia gracillima (9 revisions)
- Mirabilis sect. Oxybaphoides (9 revisions)
- Huperzia miyoshiana (9 revisions)
- Canella (9 revisions)
- Eriogonum arcuatum (9 revisions)
- Collinsia sparsiflora var. sparsiflora (9 revisions)
- Juglans major var. major (9 revisions)
- Phemeranthus teretifolius (9 revisions)
- Datiscaceae Illustrations (9 revisions)
- Ranunculus aquatilis var. aquatilis (9 revisions)
- Ranunculus recurvatus var. recurvatus (9 revisions)
- Harrisia (9 revisions)
- Trichomanes lineolatum (9 revisions)
- Eriogonum pyrolifolium (9 revisions)
- Botrychium gallicomontanum (9 revisions)
- Lorandersonia linifolia (9 revisions)
- Vittaria appalachiana (9 revisions)
- Parietaria judaica (9 revisions)
- Ericaceae Illustrations (9 revisions)
- Dicentra cucullaria (9 revisions)
- Quercus buckleyi (9 revisions)
- Echinocereus enneacanthus var. brevispinus (9 revisions)
- Talinum fruticosum (9 revisions)
- Notholaena neglecta (9 revisions)
- Polypodium glycyrrhiza (9 revisions)
- Delphinium carolinianum subsp. calciphilum (9 revisions)
- Thuja (9 revisions)
- Selaginella wrightii (9 revisions)
- Calycanthus occidentalis (9 revisions)
- Haemodoraceae Illustrations (9 revisions)
- Corydalis pauciflora (9 revisions)
- Echinocereus arizonicus (9 revisions)
- Mirabilis nyctaginea (9 revisions)
- Cystopteris utahensis (9 revisions)
- Mirabilis laevis var. villosa (9 revisions)
- Liriodendron (9 revisions)
- Adiantum melanoleucum (9 revisions)
- Eriogonum zionis (9 revisions)
- Trichomanes intricatum (9 revisions)
- Ceratophyllum muricatum subsp. australe (9 revisions)
- Juglandaceae Illustrations (9 revisions)
- Delphinium subsect. Exaltata (9 revisions)
- Papaver sect. Rhoeadium (9 revisions)
- Ranunculus acriformis var. aestivalis (9 revisions)
- Selenicereus grandiflorus (9 revisions)
- Abronia ameliae (9 revisions)
- Asplenium pumilum (9 revisions)
- Juglans nigra (9 revisions)
- Limnocharitaceae Illustrations (9 revisions)
- Anemone multifida var. tetonensis (9 revisions)
- Cannabaceae (9 revisions)
- Stenocereus (9 revisions)
- Pseudotsuga menziesii var. glauca (9 revisions)
- Corydalis caseana subsp. brandegei (9 revisions)
- Pinus ponderosa var. ponderosa (9 revisions)
- Vittaria (9 revisions)
- Chelidonium majus (9 revisions)
- Muntingiaceae Illustrations (9 revisions)
- Asimina triloba (9 revisions)
- Echinomastus mariposensis (9 revisions)
- Rivina (9 revisions)
- Chamaecyparis lawsoniana (9 revisions)
- Delphinium gracilentum (9 revisions)
- Oönopsis foliosa (9 revisions)
- Aristolochia clematitis (9 revisions)
- Selaginella tortipila (9 revisions)
- Paeoniaceae Illustrations (9 revisions)
- Myosurus apetalus var. borealis (9 revisions)
- Anemone acutiloba (9 revisions)
- Sclerocactus pubispinus (9 revisions)
- Sesuvium maritimum (9 revisions)
- Allium schoenoprasum (9 revisions)
- Asplenium ebenoides (9 revisions)
- Astrolepis sinuata subsp. mexicana (9 revisions)
- Ranunculus canus (9 revisions)
- Polygonaceae Illustrations (9 revisions)
- Caltha leptosepala (9 revisions)
- Pediocactus peeblesianus (9 revisions)
- Carpobrotus edulis (9 revisions)
- Abies bifolia (9 revisions)
- Pinus strobus (9 revisions)
- Enemion hallii (9 revisions)
- Pellaea glabella subsp. simplex (9 revisions)
- Grimmia crinitoleucophaea (9 revisions)
- Ranunculus subg. Ficaria (9 revisions)
- Braya (9 revisions)
- Resedaceae Illustrations (9 revisions)
- Asimina parviflora (9 revisions)
- Thalictrum arkansanum (9 revisions)
- Berberis darwinii (9 revisions)
- Hamatocactus (9 revisions)
- Pereskia grandifolia var. grandifolia (9 revisions)
- Selaginella apoda (9 revisions)
- Woodsia cochisensis (9 revisions)
- Cheilanthes lendigera (9 revisions)
- Cassytha filiformis (9 revisions)
- Schistostegaceae Illustrations (9 revisions)
- Carya tomentosa (9 revisions)
- Adonis aestivalis (9 revisions)
- Coryphantha duncanii (9 revisions)
- Cylindropuntia bigelovii var. bigelovii (9 revisions)
- Marsilea oligospora (9 revisions)
- Cheilanthes alabamensis (9 revisions)
- Carex paeninsulae (9 revisions)
- Myosurus apetalus var. montanus (9 revisions)
- Neurodium lanceolatum (9 revisions)
- Eriophorum gracile (9 revisions)
- Berberis canadensis (9 revisions)
- Takakiaceae Illustrations (9 revisions)
- Aquilegia saximontana (9 revisions)
- Carya laciniosa (9 revisions)
- Epithelantha bokei (9 revisions)
- Cylindropuntia echinocarpa (9 revisions)
- Pinus aristata (9 revisions)
- Taxodium (9 revisions)
- Crataegus ×fretalis (9 revisions)
- Quercus arkansana (9 revisions)
- Botrychium pedunculosum (9 revisions)
- Eriogonum corymbosum var. glutinosum (9 revisions)
- Hexastylis virginica (9 revisions)
- Violaceae Illustrations (9 revisions)
- Fumaria (9 revisions)
- Juglans microcarpa (9 revisions)
- Amblystegiaceae Illustrations (9 revisions)
- Grusonia parishii (9 revisions)
- Selaginella (9 revisions)
- Selaginella oregana (9 revisions)
- Rhododendron columbianum (9 revisions)
- Delphinium subsect. Wislizenana (9 revisions)
- Selaginella asprella (9 revisions)
- Aponogetonaceae (9 revisions)
- Eriogonum brevicaule (9 revisions)
- Aponogeton distachyos (9 revisions)
- Juglans californica (9 revisions)
- Quercus incana (9 revisions)
- Basellaceae Illustrations (9 revisions)
- Clematis pauciflora (9 revisions)
- Ranunculus hispidus var. nitidus (9 revisions)
- Opuntia aciculata (9 revisions)
- Notholaena aliena (9 revisions)
- Humulus lupulus var. pubescens (9 revisions)
- Polypodium saximontanum (9 revisions)
- Hippuris montana (9 revisions)
- Quercus velutina (9 revisions)
- Cactaceae Illustrations (9 revisions)
- Berberis nevinii (9 revisions)
- Sanguinaria (9 revisions)
- Opuntia littoralis (9 revisions)
- Larix (9 revisions)
- Scorpidium cossonii (9 revisions)
- Cystopteris tennesseensis (9 revisions)
- Persea palustris (9 revisions)
- Salvinia minima (9 revisions)
- Chionophila tweedyi (9 revisions)
- Marsileaceae (9 revisions)
- Delphinium parryi subsp. purpureum (9 revisions)
- Aquilegia jonesii (9 revisions)
- Cleomaceae Illustrations (9 revisions)
- Cucurbita melopepo var. melopepo (9 revisions)
- Xanthorhiza (9 revisions)
- Opuntia pinkavae (9 revisions)
- Pteridium aquilinum var. pubescens (9 revisions)
- Dendromecon harfordii (9 revisions)
- Botrychium biternatum (9 revisions)
- Collinsia sparsiflora var. collina (9 revisions)
- Tanacetum balsamita (9 revisions)
- Rhynchospora (9 revisions)
- Quercus hinckleyi (9 revisions)
- Phemeranthus thompsonii (9 revisions)
- Dennstaedtiaceae Illustrations (9 revisions)
- Delphinium scopulorum (9 revisions)
- Ranunculus glaberrimus var. glaberrimus (9 revisions)
- Harrisia aboriginum (9 revisions)
- Deparia acrostichoides (9 revisions)
- Pinus contorta var. murrayana (9 revisions)
- Polygonum fowleri subsp. fowleri (9 revisions)
- Ulmus alata (9 revisions)
- Pinus jeffreyi (9 revisions)
- Laënnecia sophiifolia (9 revisions)
- Arctomecon (9 revisions)
- Eriocaulaceae Illustrations (9 revisions)
- Corylus americana (9 revisions)
- Delphinium newtonianum (9 revisions)
- Talinum paniculatum (9 revisions)
- Marsilea ancylopoda (9 revisions)
- Nymphaea lotus (9 revisions)
- Trichomanes holopterum (9 revisions)
- Abies procera (9 revisions)
- Hexastylis minor (9 revisions)
- Hamamelidaceae Illustrations (9 revisions)
- Anemone edwardsiana var. edwardsiana (9 revisions)
- Aquilegia coerulea var. ochroleuca (9 revisions)
- Anemone oregana var. oregana (9 revisions)
- Echinocereus coccineus (9 revisions)
- Mirabilis latifolia (9 revisions)
- Diphasiastrum (9 revisions)
- Ranunculus californicus (9 revisions)
- Taxus brevifolia (9 revisions)
- Pseudotsuga menziesii var. menziesii (9 revisions)
- Thalictrum minus (9 revisions)
- Juncaceae Illustrations (9 revisions)
- Cimicifuga rubifolia (9 revisions)
- Argemone albiflora subsp. texana (9 revisions)
- Hexastylis contracta (9 revisions)
- Selenicereus spinulosus (9 revisions)
- Abronia macrocarpa (9 revisions)
- Ophioglossum (9 revisions)
- Abies magnifica (9 revisions)
- Weissia (9 revisions)
- Ranunculus kamtschaticus (9 revisions)
- Botrychium acuminatum (9 revisions)
- Thalictrum sect. Anemonella (9 revisions)
- Lycopodiaceae Illustrations (9 revisions)
- Corydalis micrantha subsp. texensis (9 revisions)
- Calycanthus floridus var. floridus (9 revisions)
- Ranunculus glaberrimus var. ellipticus (9 revisions)
- Stenocereus thurberi (9 revisions)
- Abronia umbellata var. umbellata (9 revisions)
- Tectaria coriandrifolia (9 revisions)
- Asplenium ×curtissii (9 revisions)
- Pinus radiata (9 revisions)
- Eriogonum hemipterum (9 revisions)
- Musaceae Illustrations (9 revisions)
- Ranunculus harveyi var. harveyi (9 revisions)
- Betula nigra (9 revisions)
- Ranunculus sect. Ranunculus (9 revisions)
- Echinomastus warnockii (9 revisions)
- Pisonia (9 revisions)
- Pinus ponderosa var. scopulorum (9 revisions)
- Huperzia lucidula (9 revisions)
- Quercus boyntonii (9 revisions)
- Macleaya cordata (9 revisions)
- Pinus clausa (9 revisions)
- Papaveraceae Illustrations (9 revisions)
- Quercus alba (9 revisions)
- Ranunculus fasciculatus (9 revisions)
- Urtica dioica subsp. dioica (9 revisions)
- Sclerocactus spinosior (9 revisions)
- Sesuvium trianthemoides (9 revisions)
- Cupressus bakeri (9 revisions)
- Thuja occidentalis (9 revisions)
- Calopogon barbatus (9 revisions)
- Hexastylis lewisii (9 revisions)
- Juncus kelloggii (9 revisions)
- Agave americana (9 revisions)
- Blechnum occidentale var. minor (9 revisions)
- Ranunculus sect. Pseudaphanostemma (9 revisions)
- Polypodiaceae Illustrations (9 revisions)
- Caulophyllum (9 revisions)
- Meconella californica (9 revisions)
- Cakile edentula var. edentula (9 revisions)
- Ranunculus hispidus var. hispidus (9 revisions)
- Pediocactus peeblesianus subsp. peeblesianus (9 revisions)
- Trichostigma octandrum (9 revisions)
- Trichomanes petersii (9 revisions)
- Nymphaea mexicana (9 revisions)
- Phlegmariurus (9 revisions)
- Alisma (9 revisions)
- Quercus laceyi (9 revisions)
- Rhachitheciaceae Illustrations (9 revisions)
- Argemone munita subsp. robusta (9 revisions)
- Cactaceae subfam. Opuntioideae (9 revisions)
- Abies lowiana (9 revisions)
- Pteridium aquilinum var. latiusculum (9 revisions)
- Ranunculus parviflorus (9 revisions)
- Azolla caroliniana (9 revisions)
- Delphinium hansenii subsp. ewanianum (9 revisions)
- Schizaeaceae Illustrations (9 revisions)
- Hexastylis naniflora (9 revisions)
- Trautvetteria (9 revisions)
- Sinapis alba (9 revisions)
- Dicentra formosa subsp. oregana (9 revisions)
- Coryphantha robbinsorum (9 revisions)
- Cylindropuntia tunicata (9 revisions)
- Ctenitis sloanei (9 revisions)
- Notholaena aschenborniana (9 revisions)
- Deeringothamnus rugelii (9 revisions)
- Asplenium monanthes (9 revisions)
- Solidago subsect. Venosae (9 revisions)
- Delphinium subsect. Depauperata (9 revisions)
- Tamaricaceae Illustrations (9 revisions)
- Magnolia virginiana (9 revisions)
- Lindera (9 revisions)
- Delphinium patens (9 revisions)
- Ariocarpus (9 revisions)
- Eurhynchiastrum pulchellum var. barnesii (9 revisions)
- Anemia wrightii (9 revisions)
- Crataegus ×incaedua (9 revisions)
- Ceratophyllaceae (9 revisions)
- Vittariaceae (9 revisions)
- Platanaceae (9 revisions)
- Vittariaceae Illustrations (9 revisions)
- Corydalis aurea subsp. occidentalis (9 revisions)
- Andreaeaceae Illustrations (9 revisions)
- Menispermaceae (9 revisions)
- Grusonia pulchella (9 revisions)
- Dicranopteris flexuosa (9 revisions)
- Juniperus pinchotii (9 revisions)
- Delphinium hesperium subsp. hesperium (9 revisions)
- Eriogonum heracleoides (9 revisions)
- Tsuga canadensis (9 revisions)
- Callitriche brutia var. hamulata (9 revisions)
- Delphinium cardinale (9 revisions)
- Quercus oglethorpensis (9 revisions)
- Bataceae Illustrations (9 revisions)
- Aristolochia tomentosa (9 revisions)
- Aquilegia micrantha (9 revisions)
- Vittaria graminifolia (9 revisions)
- Selaginella willdenowii (9 revisions)
- Juncus acuminatus (9 revisions)
- Iris (sect. Limniris) ser. Spuriae (9 revisions)
- Clematis pitcheri var. dictyota (9 revisions)
- Ranunculus hydrocharoides (9 revisions)
- Calliergonaceae Illustrations (9 revisions)
- Cinnamomum camphora (9 revisions)
- Delphinium hesperium subsp. pallescens (9 revisions)
- Spiraea ×vanhouttei (9 revisions)
- Oxalis frutescens subsp. angustifolia (9 revisions)
- Asplenium montanum (9 revisions)
- Pinus ponderosa var. arizonica (9 revisions)
- Glaucium flavum (9 revisions)
- Salix ×smithiana (9 revisions)
- Collinsia (9 revisions)
- Papaver macounii subsp. discolor (9 revisions)
- Fothergilla (9 revisions)
- Clethraceae Illustrations (9 revisions)
- Cucurbita melopepo subsp. texana (9 revisions)
- Delphinium parishii subsp. subglobosum (9 revisions)
- Ranunculus arvensis (9 revisions)
- Opuntia fragilis (9 revisions)
- Selaginella pilifera (9 revisions)
- Chamaecyparis thyoides (9 revisions)
- Casuarina glauca (9 revisions)
- Pinus banksiana (9 revisions)
- Viola orbiculata (9 revisions)
- Juncus phaeocephalus (9 revisions)
- Trichomanes membranaceum (9 revisions)
- Anemone multifida var. stylosa (9 revisions)
- Phemeranthus validulus (9 revisions)
- Diapensiaceae Illustrations (9 revisions)
- Akebia quinata (9 revisions)
- Aristolochiaceae (9 revisions)
- Harrisia simpsonii (9 revisions)
- Cheilanthes parryi (9 revisions)
- Notholaena copelandii (9 revisions)
- Polygonum fowleri subsp. hudsonianum (9 revisions)
- Pseudolycopodiella (9 revisions)
- Lorandersonia microcephala (9 revisions)
- Bellis (9 revisions)
- Sansevieria hyacinthoides (9 revisions)
- Cupressus macnabiana (9 revisions)
- Betula murrayana (9 revisions)
- Erpodiaceae Illustrations (9 revisions)
- Quercus myrtifolia (9 revisions)
- Ranunculus sect. Arcteranthis (9 revisions)
- Boerhavia linearifolia (9 revisions)
- Basellaceae (9 revisions)
- Sorbus subg. Sorbus (9 revisions)
- Tectaria fimbriata (9 revisions)
- Asplenium (9 revisions)
- Quercus texana (9 revisions)
- Calocedrus (9 revisions)
- Selaginella eclipes (9 revisions)
- Ranunculus eschscholtzii var. eximius (9 revisions)
- Hedwigiaceae Illustrations (9 revisions)
- Papaver sect. Papaver (9 revisions)
- Maclura pomifera (9 revisions)
- Echinocereus viridiflorus (9 revisions)
- Mirabilis glabra (9 revisions)
- Cistanthe umbellata (9 revisions)
- Tsuga caroliniana (9 revisions)
- Ficus citrifolia (9 revisions)
- Asplenium exiguum (9 revisions)
- Spergularia platensis (9 revisions)
- Corrigiola litoralis (9 revisions)
- Asplenium dalhousiae (9 revisions)
- Berberis nervosa (9 revisions)
- Juncaginaceae Illustrations (9 revisions)
- Peperomia obtusifolia (9 revisions)
- Quercus gambelii (9 revisions)
- Selenicereus pteranthus (9 revisions)
- Abronia elliptica (9 revisions)
- Adiantum tricholepis (9 revisions)
- Anemone drummondii var. lithophila (9 revisions)
- Thelypteris hispidula var. versicolor (9 revisions)
- Taxus (9 revisions)
- Ranunculus alismifolius var. lemmonii (9 revisions)
- Lygodiaceae Illustrations (9 revisions)
- Thalictrum clavatum (9 revisions)
- Umbellularia (9 revisions)
- Chelidonium (9 revisions)
- Echinocactus (9 revisions)
- Abronia umbellata var. acutalata (9 revisions)
- Woodsia scopulina subsp. laurentiana (9 revisions)
- Nuphar orbiculata (9 revisions)
- Myricaceae Illustrations (9 revisions)
- Illicium (9 revisions)
- Canella winterana (9 revisions)
- Pisonia aculeata (9 revisions)
- Thelypteris serrata (9 revisions)
- Spergularia canadensis var. canadensis (9 revisions)
- Cheilanthes pringlei (9 revisions)
- Ranunculus orthorhynchus var. orthorhynchus (9 revisions)
- Juncus acutiflorus (9 revisions)
- Phoradendron (9 revisions)
- Ranunculus macauleyi (9 revisions)
- Parkeriaceae Illustrations (9 revisions)
- Chrysolepis sempervirens (9 revisions)
- Quercus depressipes (9 revisions)
- Asarum (9 revisions)
- Sclerocactus blainei (9 revisions)
- Sesuvium portulacastrum (9 revisions)
- Pellaea brachyptera (9 revisions)
- Pellaea gastonyi (9 revisions)
- Magnolia grandiflora (9 revisions)
- Tsuga (9 revisions)
- Eriogonum deflexum (9 revisions)
- Nectandra (9 revisions)
- Polytrichaceae Illustrations (9 revisions)
- Quercus pungens (9 revisions)
- Cakile edentula var. lacustris (9 revisions)
- Clematis subg. Clematis (9 revisions)
- Pediocactus peeblesianus subsp. fickeiseniae (9 revisions)
- Conicosia (9 revisions)
- Cyrtomium (9 revisions)
- Nymphaea capensis (9 revisions)
- Tradescantia zebrina (9 revisions)
- Eriogonum tenellum (9 revisions)
- Acalypha (9 revisions)
- Agave parryi var. parryi (9 revisions)
- Clematis glaucophylla (9 revisions)
- Rhizogoniaceae Illustrations (9 revisions)
- Delphinium gypsophilum (9 revisions)
- Peperomia humilis (9 revisions)
- Hamatocactus bicolor (9 revisions)
- Cylindropuntia (9 revisions)
- Thelypteris reticulata (9 revisions)
- Blechnum serrulatum (9 revisions)
- Dicentra chrysantha (9 revisions)
- Eriogonum subg. Oligogonum (9 revisions)
- Macrothelypteris (9 revisions)
- Ranunculus ranunculinus (9 revisions)
- Scouleriaceae Illustrations (9 revisions)
- Schisandra (9 revisions)
- Aristolochia pentandra (9 revisions)
- Delphinium californicum subsp. californicum (9 revisions)
- Coryphantha missouriensis (9 revisions)
- Cylindropuntia davisii (9 revisions)
- Hymenophyllaceae (9 revisions)
- Cupressus guadalupensis var. forbesii (9 revisions)
- Anemone virginiana var. virginiana (9 revisions)
- Pleopeltis polypodioides var. michauxiana (9 revisions)
- Arceuthobium campylopodum subsp. monticola (9 revisions)
- Quercus inopina (9 revisions)
- Taxaceae Illustrations (9 revisions)
- Piperaceae (9 revisions)
- Asarum wagneri (9 revisions)
- Anulocaulis (9 revisions)
- Cylindropuntia acanthocarpa var. acanthocarpa (9 revisions)
- Isoëtes butleri (9 revisions)
- Crataegus ×kelloggii (9 revisions)
- Aquilegia hinckleyana (9 revisions)
- Juncus arcticus var. alaskanus (9 revisions)
- Asimina (9 revisions)
- Xyridaceae Illustrations (9 revisions)
- Hexastylis speciosa (9 revisions)
- Andreaeobryaceae Illustrations (9 revisions)
- Opuntia (9 revisions)
- Thelypteris grandis var. grandis (9 revisions)
- Onoclea (9 revisions)
- Pinus taeda (9 revisions)
- Myurella sibirica (9 revisions)
- Taxodium distichum var. distichum (9 revisions)
- Bucklandiella affinis (9 revisions)
- Iris (sect. Limniris) ser. Longipetalae (9 revisions)
- Platystemon californicus (9 revisions)
- Aristolochia macrophylla (9 revisions)
- Begoniaceae Illustrations (9 revisions)
- Deeringothamnus pulchellus (9 revisions)
- Opuntia engelmannii var. engelmannii (9 revisions)
- Isoëtes orcuttii (9 revisions)
- Engelmannia (9 revisions)
- Equisetum hyemale subsp. affine (9 revisions)
- Parietaria floridana (9 revisions)
- Thalictrum occidentale (9 revisions)
- Calophyllaceae Illustrations (9 revisions)
- Delphinium subsect. Grumosa (9 revisions)
- Opuntia ×occidentalis (9 revisions)
- Calocedrus decurrens (9 revisions)
- Carex recta (9 revisions)
- Cimicifuga arizonica (9 revisions)
- Gymnocarpium (9 revisions)
- Salix humboldtiana (9 revisions)
- Eriogonum prociduum (9 revisions)
- Collinsia verna (9 revisions)
- Schizaea pusilla (9 revisions)
- Hamamelis (9 revisions)
- Delphinium alpestre (9 revisions)
- Climaciaceae Illustrations (9 revisions)
- Saururus (9 revisions)
- Opuntia ×columbiana (9 revisions)
- Phanerophlebia (9 revisions)
- Cupressus macrocarpa (9 revisions)
- Collinsia wrightii (9 revisions)
- Pinus sylvestris (9 revisions)
- Argemone pleiacantha subsp. ambigua (9 revisions)
- Mirabilis linearis var. linearis (9 revisions)
- Dicranaceae Illustrations (9 revisions)
- Eschscholzia lobbii (9 revisions)
- Lardizabalaceae (9 revisions)
- Harrisia fragrans (9 revisions)
- Ephedra cutleri (9 revisions)
- Magnolia (9 revisions)
- Botrychium sect. Hiemobotrychium (9 revisions)
- Lorandersonia peirsonii (9 revisions)
- Collinsia concolor (9 revisions)
- Quercus muehlenbergii (9 revisions)
- Fabroniaceae Illustrations (9 revisions)
- Ranunculus macranthus (9 revisions)
- Quercus oblongifolia (9 revisions)
- Echinocereus stramineus var. stramineus (9 revisions)
- Anredera (9 revisions)
- Juniperus coahuilensis (9 revisions)
- Lycopodium (9 revisions)
- Myrica inodora (9 revisions)
- Astrolepis sinuata subsp. sinuata (9 revisions)
- Keckiella lemmonii (9 revisions)
- Equisetum subg. Hippochaete (9 revisions)
- Ranunculus sect. Flammula (9 revisions)
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- Thalictrum sect. Thalictrum (9 revisions)
- Nuphar microphylla (9 revisions)
- Argemone (9 revisions)
- Echinocereus davisii (9 revisions)
- Mirabilis austrotexana (9 revisions)
- Taxaceae (9 revisions)
- Pentagramma triangularis subsp. triangularis (9 revisions)
- Nymphaea ampla (9 revisions)
- Pinus elliottii var. elliottii (9 revisions)
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- Liquidambar (9 revisions)
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- Piper (9 revisions)
- Myrica pensylvanica (9 revisions)
- Boerhavia triquetra (9 revisions)
- Abronia bolackii (9 revisions)
- Thelypteris puberula var. sonorensis (9 revisions)
- Pinus quadrifolia (9 revisions)
- Fagus grandifolia (9 revisions)
- Ophioglossum nudicaule (9 revisions)
- Chorizanthe brevicornu (9 revisions)
- Pinus rigida (9 revisions)
- Eschscholzia rhombipetala (9 revisions)
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- Thalictrum sparsiflorum (9 revisions)
- Delphinium menziesii subsp. pallidum (9 revisions)
- Nymphaea elegans (9 revisions)
- Echinocactus horizonthalonius (9 revisions)
- Abronia umbellata var. breviflora (9 revisions)
- Ctenitis (9 revisions)
- Thelypteris kunthii (9 revisions)
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- Eriogonum nudum (9 revisions)
- Juncus triformis (9 revisions)
- Cheilanthes clevelandii (9 revisions)
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- Ficus microcarpa (9 revisions)
- Ranunculus glacialis var. camissonis (9 revisions)
- Eschscholzia ramosa (9 revisions)
- Echinomastus intertextus var. intertextus (9 revisions)
- Pisonia capitata (9 revisions)
- Pinus monophylla (9 revisions)
- Ophioglossum crotalophoroides (9 revisions)
- Ulmus crassifolia (9 revisions)
- Berberis wilcoxii (9 revisions)
- Botrychium pumicola (9 revisions)
- Passifloraceae Illustrations (9 revisions)
- Ranunculus subg. Crymodes (9 revisions)
- Argemone polyanthemos (9 revisions)
- Hamamelidaceae (9 revisions)
- Sclerocactus sileri (9 revisions)
- Sesuvium verrucosum (9 revisions)
- Vitaceae (9 revisions)
- Asplenium plenum (9 revisions)
- Cabombaceae (9 revisions)
- Eriogonum ovalifolium (9 revisions)
- Campyloneurum phyllitidis (9 revisions)
- Pontederiaceae Illustrations (9 revisions)
- Broussonetia papyrifera (9 revisions)
- Ranunculus ficaria (9 revisions)
- Pediocactus bradyi (9 revisions)
- Conicosia pugioniformis (9 revisions)
- Isopterygiopsis pulchella (9 revisions)
- Selaginella watsonii (9 revisions)
- Cheilanthes kaulfussii (9 revisions)
- Zamiaceae (9 revisions)
- Polygonaceae (9 revisions)
- Agave parryi var. huachucensis (9 revisions)
- Podophyllum peltatum (9 revisions)
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- Magnolia fraseri (9 revisions)
- Anemone piperi (9 revisions)
- Coryphantha (9 revisions)
- Cylindropuntia leptocaulis (9 revisions)
- Cryptogramma acrostichoides (9 revisions)
- Ranunculus flabellaris (9 revisions)
- Blechnaceae (9 revisions)
- Deeringothamnus (9 revisions)
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- Broussonetia (9 revisions)
- Quercus montana (9 revisions)
- Carpinus caroliniana subsp. virginiana (9 revisions)
- Coryphantha minima (9 revisions)
- Achatocarpaceae (9 revisions)
- Ctenitis submarginalis (9 revisions)
- Ephedra fasciculata (9 revisions)
- Carex argyrantha (9 revisions)
- Quercus sinuata var. breviloba (9 revisions)
- Polypodiaceae (9 revisions)
- Quercus havardii (9 revisions)
- Tetraphidaceae Illustrations (9 revisions)
- Caulophyllum thalictroides (9 revisions)
- Cocculus diversifolius (9 revisions)
- Stylophorum diphyllum (9 revisions)
- Ariocarpus fissuratus (9 revisions)
- Cylindropuntia acanthocarpa var. thornberi (9 revisions)
- Pseudotsuga (9 revisions)
- Helianthus mollis (9 revisions)
- Notholaena standleyi (9 revisions)
- Herniaria hirsuta (9 revisions)
- Zamiaceae Illustrations (9 revisions)
- Nymphaeaceae (9 revisions)
- Anemiaceae Illustrations (9 revisions)
- Opuntia pusilla (9 revisions)
- Pecluma ptilodon var. caespitosa (9 revisions)
- Romneya coulteri (9 revisions)
- Eriogonum baileyi (9 revisions)
- Nelumbo nucifera (9 revisions)
- Berberidaceae Illustrations (9 revisions)
- Anemone multiceps (9 revisions)
- Rumex (9 revisions)
- Opuntia engelmannii var. linguiformis (9 revisions)
- Microgramma heterophylla (9 revisions)
- Quercus arizonica (9 revisions)
- Campyloneurum costatum (9 revisions)
- Iris (sect. Limniris) ser. Prisimaticae (9 revisions)
- Saururus cernuus (9 revisions)
- Ranunculus alismifolius var. alismellus (9 revisions)
- Calycanthaceae Illustrations (9 revisions)
- Ranunculus sceleratus var. sceleratus (9 revisions)
- Ranunculus orthorhynchus var. bloomeri (9 revisions)
- Opuntia microdasys (9 revisions)
- Odontosoria clavata (9 revisions)
- Pinus serotina (9 revisions)
- Ranunculus alismifolius var. alismifolius (9 revisions)
- Selaginella leucobryoides (9 revisions)
- Collinsia violacea (9 revisions)
- Selaginella utahensis (9 revisions)
- Hamamelis vernalis (9 revisions)
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- Nigella damascena (9 revisions)
- Cheiroglossa palmata (9 revisions)
- Acrostichum danaeifolium (9 revisions)
- Ulmus (9 revisions)
- Collinsia torreyi (9 revisions)
- Pteris multifida (9 revisions)
- Clematis occidentalis var. dissecta (9 revisions)
- Portulaca (9 revisions)
- Dioscoreaceae Illustrations (9 revisions)
- Diphylleia (9 revisions)
- Woodwardia (9 revisions)
- Juniperus virginiana var. silicicola (9 revisions)
- Illiciaceae (9 revisions)
- Eriogonum lachnogynum (9 revisions)
- Lorandersonia pulchella (9 revisions)
- Keckiella (9 revisions)
- Rhynchospora colorata (9 revisions)
- Asplenium rhizophyllum (9 revisions)
- Berberis fremontii (9 revisions)
- Fagaceae Illustrations (9 revisions)
- Ranunculus subg. Oxygraphis (9 revisions)
- Berberis amplectens (9 revisions)
- Echinocereus papillosus (9 revisions)
- Mirabilis linearis var. subhispida (9 revisions)
- Dryopteris cristata (9 revisions)
- Dryopteris ludoviciana (9 revisions)
- Berberis aquifolium (9 revisions)
- Thelypteridaceae (9 revisions)
- Eriogonum kennedyi (9 revisions)
- Carex scirpoidea subsp. scirpoidea (9 revisions)
- Huperzia occidentalis (9 revisions)
- Helodiaceae Illustrations (9 revisions)
- Asarum lemmonii (9 revisions)
- Delphinium subsect. Echinata (9 revisions)
- Quercus chihuahuensis (9 revisions)
- Echinocereus berlandieri (9 revisions)
- Phytolacca bogotensis (9 revisions)
- Cupressus arizonica (9 revisions)
- Pityrogramma calomelanos var. calomelanos (9 revisions)
- Aconitum columbianum subsp. columbianum (9 revisions)
- Pinus pungens (9 revisions)
- Pellaea ternifolia subsp. arizonica (9 revisions)
- Stylomecon heterophylla (9 revisions)
- Lardizabalaceae Illustrations (9 revisions)
- Quercus vaseyana (9 revisions)
- Berberidaceae (9 revisions)
- Clematis orientalis (9 revisions)
- Epiphyllum (9 revisions)
- Abronia argillosa (9 revisions)
- Pinus (9 revisions)
- Clematis catesbyana (9 revisions)
- Pellaea andromedifolia (9 revisions)
- Ophioglossum engelmannii (9 revisions)
- Hexastylis rhombiformis (9 revisions)
- Malvaceae Illustrations (9 revisions)
- Ranunculus sect. Halodes (9 revisions)
- Enemion biternatum (9 revisions)
- Xanthorhiza simplicissima (9 revisions)
- Abronia latifolia (9 revisions)
- Asplenium ruta-muraria (9 revisions)
- Pteris cretica var. albolineata (9 revisions)
- Stylomecon (9 revisions)
- Asplenium cristatum (9 revisions)
- Polypodium californicum (9 revisions)
- Delphinium lineapetalum (9 revisions)
- Myrsinaceae Illustrations (9 revisions)
- Clematis tangutica var. tangutica (9 revisions)
- Hesperomecon linearis (9 revisions)
- Boerhavia wrightii (9 revisions)
- Pisonia rotundata (9 revisions)
- Juniperus flaccida var. flaccida (9 revisions)
- Persea (9 revisions)
- Thelypteris noveboracensis (9 revisions)
- Trema micrantha (9 revisions)
- Penthoraceae Illustrations (9 revisions)
- Ficus benghalensis (9 revisions)
- Aconitum delphiniifolium (9 revisions)
- Calycanthus floridus var. glaucus (9 revisions)
- Sclerocactus polyancistrus (9 revisions)
- Cypselea (9 revisions)
- Argyrochosma limitanea subsp. mexicana (9 revisions)
- Berberis pinnata subsp. insularis (9 revisions)
- Cupressus sargentii (9 revisions)
- Agave americana subsp. americana (9 revisions)
- Lindera melissifolia (9 revisions)
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- Thalictrum dasycarpum (9 revisions)
- Dicentra ochroleuca (9 revisions)
- Ranunculus cardiophyllus (9 revisions)
- Pediocactus paradinei (9 revisions)
- Malephora (9 revisions)
- Selaginella underwoodii (9 revisions)
- Cheilanthes newberryi (9 revisions)
- Cystopteris tenuis (9 revisions)
- Agave parryi var. couesii (9 revisions)
- Aquilegia chrysantha (9 revisions)
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- Ficus religiosa (9 revisions)
- Quercus emoryi (9 revisions)
- Coryphantha macromeris (9 revisions)
- Cylindropuntia arbuscula (9 revisions)
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- Gleicheniaceae (9 revisions)
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- Quercus pagoda (9 revisions)
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- Clematis albicoma (9 revisions)
- Coryphantha hesteri (9 revisions)
- Cylindropuntia whipplei (9 revisions)
- Astrolepis cochisensis subsp. arizonica (9 revisions)
- Brasenia (9 revisions)
- Lycopodiella alopecuroides (9 revisions)
- Juncus hemiendytus var. hemiendytus (9 revisions)
- Aquilegia pubescens (9 revisions)
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- Anemone drummondii var. drummondii (9 revisions)
- Betula kenaica (9 revisions)
- Ariocarpus fissuratus var. fissuratus (9 revisions)
- Cylindropuntia acanthocarpa var. coloradensis (9 revisions)
- Arachniodes (9 revisions)
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- Corydalis (9 revisions)
- Thelypteris dentata (9 revisions)
- Krameria (9 revisions)
- Eriogonum luteolum (9 revisions)
- Iris (sect. Limniris) ser. Sibirica (9 revisions)
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- Parietaria pensylvanica (9 revisions)
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- Osmunda (9 revisions)
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- Eriogonum compositum (9 revisions)
- Solidago lepida subsp. lepida (9 revisions)
- Mycelis (9 revisions)
- Quercus toumeyi (9 revisions)
- Quercus minima (9 revisions)
- Betulaceae Illustrations (9 revisions)
- Delphinium sapellonis (9 revisions)
- Opuntia engelmannii var. lindheimeri (9 revisions)
- Pellaea atropurpurea (9 revisions)
- Cassytha (9 revisions)
- Ceratopteris thalictroides (9 revisions)
- Juncus bolanderi (9 revisions)
- Ficus carica (9 revisions)
- Argemone albiflora subsp. albiflora (9 revisions)
- Calymperaceae Illustrations (9 revisions)
- Helleborus (9 revisions)
- Delphinium polycladon (9 revisions)
- Boerhavia coccinea (9 revisions)
- Phlebodium (9 revisions)
- Asplenium septentrionale (9 revisions)
- Pouzolzia zeylanica (9 revisions)
- Polystichum scopulinum (9 revisions)
- Collinsia grandiflora (9 revisions)
- Campyloneurum latum (9 revisions)
- Ranunculaceae (9 revisions)
- Delphinium trolliifolium (9 revisions)
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- Cucurbita melopepo var. ozarkana (9 revisions)
- Argemone ochroleuca (9 revisions)
- Celtis (9 revisions)
- Opuntia polyacantha var. polyacantha (9 revisions)
- Crataegus ×rufula (9 revisions)
- Coreopsis tinctoria (9 revisions)
- Selaginella standleyi (9 revisions)
- Aspidotis densa (9 revisions)
- Argemone pleiacantha subsp. pleiacantha (9 revisions)
- Pellaea glabella subsp. glabella (9 revisions)
- Collinsia latifolia (9 revisions)
- Thelypteris sclerophylla (9 revisions)
- Portulaca amilis (9 revisions)
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- Aquilegia brevistyla (9 revisions)
- Menispermum (9 revisions)
- Acanthocereus tetragonus (9 revisions)
- Portulaca pilosa (9 revisions)
- Juniperus sect. Juniperus (9 revisions)
- Urtica gracilenta (9 revisions)
- Argyrochosma incana (9 revisions)
- Lorandersonia salicina (9 revisions)
- Juncus supiniformis (9 revisions)
- Hypolepis (9 revisions)
- Quercus falcata (9 revisions)
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- Fagus (9 revisions)
- Quercus shumardii (9 revisions)
- Echinocereus pectinatus (9 revisions)
- Anredera cordifolia (9 revisions)
- Minuartia biflora (9 revisions)
- Atriplex cordulata var. erecticaulis (9 revisions)
- Corylus cornuta subsp. californica (9 revisions)
- Nothochelone (9 revisions)
- Clematis (9 revisions)
- Hookeriaceae Illustrations (9 revisions)
- Clematis addisonii (9 revisions)
- Peperomia amplexicaulis (9 revisions)
- Lithocarpus densiflorus var. densiflorus (9 revisions)
- Echinocereus pentalophus (9 revisions)
- Mirabilis texensis (9 revisions)
- Ephedra viridis (9 revisions)
- Dysphania subsect. Botrys (9 revisions)
- Pontederia cordata (9 revisions)
- Papaver orientale (9 revisions)
- Draba fladnizensis (9 revisions)
- Selaginella subg. Stachygynandrum (9 revisions)
- Astrolepis integerrima (9 revisions)
- Delphinium stachydeum (9 revisions)
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- Quercus cornelius-mulleri (9 revisions)
- Aquilegia coerulea var. alpina (9 revisions)
- Abronia carletonii (9 revisions)
- Adiantum jordanii (9 revisions)
- Juniperus (9 revisions)
- Fumariaceae (9 revisions)
- Botrychium subg. Sceptridium (9 revisions)
- Eriogonum heermannii (9 revisions)
- Polystichum munitum (9 revisions)
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- Meconella oregana (9 revisions)
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- Castanea dentata (9 revisions)
- Echinocactus polycephalus var. polycephalus (9 revisions)
- Phytolacca octandra (9 revisions)
- Huperzia porophila (9 revisions)
- Selaginella kraussiana (9 revisions)
- Delphinium nuttallii (9 revisions)
- Blechnum (9 revisions)
- Eriogonum alatum (9 revisions)
- Casuarina equisetifolia subsp. equisetifolia (9 revisions)
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- Clematis texensis (9 revisions)
- Cannabis sativa (9 revisions)
- Echinomastus intertextus var. dasyacanthus (9 revisions)
- Guapira (9 revisions)
- Ephedra antisyphilitica (9 revisions)
- Juniperus occidentalis var. occidentalis (9 revisions)
- Nymphaea jamesoniana (9 revisions)
- Drymaria glandulosa (9 revisions)
- Adiantum capillus-veneris (9 revisions)
- Berberis dictyota (9 revisions)
- Phytolaccaceae Illustrations (9 revisions)
- Aristolochia maxima (9 revisions)
- Delphinium sutherlandii (9 revisions)
- Brosimum alicastrum (9 revisions)
- Sclerocactus nyensis (9 revisions)
- Cypselea humifusa (9 revisions)
- Aspidotis (9 revisions)
- Asplenium palmeri (9 revisions)
- Quercus garryana var. breweri (9 revisions)
- Selaginella ×neomexicana (9 revisions)
- Tradescantia reverchonii (9 revisions)
- Agave americana var. americana (9 revisions)
- Argemone squarrosa subsp. glabrata (9 revisions)
- Potamogetonaceae Illustrations (9 revisions)
- Ranunculus cooleyae (9 revisions)
- Papaver mcconnellii (9 revisions)
- Ranunculus laxicaulis (9 revisions)
- Petiveria (9 revisions)
- Malephora crocea (9 revisions)
- Notholaena grayi subsp. sonorensis (9 revisions)
- Cheilanthes bonariensis (9 revisions)
- Carex microdonta (9 revisions)
- Cotula coronopifolia (9 revisions)
- Quercus margarettae (9 revisions)
- Pleopeltis riograndensis (9 revisions)
- Anemone oregana var. felix (9 revisions)
- Braya glabella subsp. prostrata (9 revisions)
- Rosaceae Illustrations (9 revisions)
- Delphinium geraniifolium (9 revisions)
- Quercus viminea (9 revisions)
- Nandina (9 revisions)
- Coryphantha nickelsiae (9 revisions)
- Cylindropuntia ×tetracantha (9 revisions)
- Acrostichum (9 revisions)
- Kickxia spuria (9 revisions)
- Woodwardia fimbriata (9 revisions)
- Dicentra uniflora (9 revisions)
- Schizaeaceae (9 revisions)
- Juncus xiphioides (9 revisions)
- Nothocalaïs cuspidata (9 revisions)
- Nymphaea leibergii (9 revisions)
- Sematophyllaceae Illustrations (9 revisions)
- Delphinium exaltatum (9 revisions)
- Thalictrum macrostylum (9 revisions)
- Hexastylis shuttleworthii var. shuttleworthii (9 revisions)
- Coryphantha chlorantha (9 revisions)
- Cylindropuntia spinosior (9 revisions)
- Pecluma dispersa (9 revisions)
- Pellaea glabella subsp. missouriensis (9 revisions)
- Crataegus (sect. Unassigned) ser. Montaninsulae (9 revisions)
- Argemone hispida (9 revisions)
- Argyrochosma limitanea subsp. limitanea (9 revisions)
- Theliaceae Illustrations (9 revisions)
- Peperomia magnoliifolia (9 revisions)
- Anemone grayi (9 revisions)
- Delphinium decorum subsp. decorum (9 revisions)
- Lophophora (9 revisions)
- Cylindropuntia acanthocarpa var. major (9 revisions)
- Polypodium appalachianum (9 revisions)
- Trichomanes boschianum (9 revisions)
- Crataegus ×latebrosa (9 revisions)
- Pilea fontana (9 revisions)
- Gymnocarpium appalachianum (9 revisions)
- Zingiberaceae Illustrations (9 revisions)
- Cannabis (9 revisions)
- Casuarinaceae (9 revisions)
- Anomodontaceae Illustrations (9 revisions)
- Ulmus procera (9 revisions)
- Opuntia triacantha (9 revisions)
- Psilotum (9 revisions)
- Delphinium xantholeucum (9 revisions)
- Pentagramma triangularis subsp. maxonii (9 revisions)
- Solidago lepida var. lepida (9 revisions)
- Andreaea rupestris (9 revisions)
- Iris (sect. Limniris) ser. Laevigatae (9 revisions)
- Corydalis scouleri (9 revisions)
- Aristolochia watsonii (9 revisions)
- Blechnaceae Illustrations (9 revisions)
- Anemone okennonii (9 revisions)
- Quercus michauxii (9 revisions)
- Opuntia engelmannii var. flavispina (9 revisions)
- Spiraea ×hitchcockii (9 revisions)
- Asplenium trichomanes subsp. quadrivalens (9 revisions)
- Ulmus serotina (9 revisions)
- Campyloneurum angustifolium (9 revisions)
- Arisaema triphyllum (9 revisions)
- Chelone (9 revisions)
- Eriophorum brachyantherum (9 revisions)
- Quercus sadleriana (9 revisions)
- Akebia (9 revisions)
- Canellaceae Illustrations (9 revisions)
- Corylus avellana (9 revisions)
- Eschscholzia parishii (9 revisions)
- Opuntia rufida (9 revisions)
- Azollaceae (9 revisions)
- Tsuga mertensiana (9 revisions)
- Cimicifuga americana (9 revisions)
- Eriogonum marifolium (9 revisions)
- Cryptogramma sitchensis (9 revisions)
- Collinsia parviflora (9 revisions)
- Ophioglossum vulgatum (9 revisions)
- Phytolaccaceae (9 revisions)
- Commelinaceae Illustrations (9 revisions)
- Ranunculus eschscholtzii var. suksdorfii (9 revisions)
- Aristolochia erecta (9 revisions)
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