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- Eupatorium hyssopifolium (10 revisions)
- Eriophorum angustifolium (10 revisions)
- Asplenium ×heteroresiliens (10 revisions)
- Danthonia parryi (10 revisions)
- Andropogon liebmannii (10 revisions)
- Muhlenbergia diversiglumis (10 revisions)
- Pennisetum macrostachys (10 revisions)
- Psilocarphus brevissimus (10 revisions)
- Dichanthelium sect. Oligosantha (10 revisions)
- Poa sect. Dioicopoa (10 revisions)
- Bromus caroli-henrici (10 revisions)
- Alopecurus aequalis var. aequalis (10 revisions)
- Pinus sabiniana (10 revisions)
- Poaceae subfam. Aristidoideae (10 revisions)
- Crataegus crus-galli (10 revisions)
- Andropogon glomeratus var. pumilus (10 revisions)
- Muhlenbergia pungens (10 revisions)
- Cenchrus (10 revisions)
- Agrostis microphylla (10 revisions)
- Poa glauca (10 revisions)
- Cercocarpus betuloides (10 revisions)
- Hordeum jubatum subsp. intermedium (10 revisions)
- Festuca ligulata (10 revisions)
- Poa secunda (10 revisions)
- Ranunculus acris (10 revisions)
- Penstemon rydbergii (10 revisions)
- Salix wolfii (10 revisions)
- Liatris elegans (10 revisions)
- Schizachyrium maritimum (10 revisions)
- Muhlenbergia montana (10 revisions)
- Holodiscus discolor (10 revisions)
- Dichanthelium dichotomum subsp. microcarpon (10 revisions)
- Lagurus (10 revisions)
- Poa suksdorfii (10 revisions)
- Eremopyrum bonaepartis (10 revisions)
- Luziola (10 revisions)
- Melica montezumae (10 revisions)
- Picea sitchensis (10 revisions)
- Carex muricata (10 revisions)
- Persicaria wallichii (10 revisions)
- Parnassia cirrata (10 revisions)
- Phytolacca americana (10 revisions)
- Heteropogon melanocarpus (10 revisions)
- Muhlenbergia rigens (10 revisions)
- Setaria macrostachya (10 revisions)
- Dichanthelium sect. Sphaerocarpa (10 revisions)
- Glyceria septentrionalis var. arkansana (10 revisions)
- Melochia pyramidata (10 revisions)
- Poa napensis (10 revisions)
- Oryza punctata (10 revisions)
- Festuca lenensis (10 revisions)
- Poaceae tribe Stipeae (10 revisions)
- Sonchus arvensis (10 revisions)
- Populus fremontii (10 revisions)
- Eremochloa (10 revisions)
- Chloris ciliata (10 revisions)
- Setaria viridis (10 revisions)
- Eragrostis mexicana subsp. virescens (10 revisions)
- Scribneria (10 revisions)
- Festuca frederikseniae (10 revisions)
- Achnatherum parishii (10 revisions)
- Symphyotrichum ontarionis (10 revisions)
- Zea perennis (10 revisions)
- Chloris andropogonoides (10 revisions)
- Sorbus sitchensis (10 revisions)
- Hymenachne amplexicaulis (10 revisions)
- Panicum miliaceum subsp. miliaceum (10 revisions)
- Glyceria leptostachya (10 revisions)
- Schedonorus (10 revisions)
- Achnatherum richardsonii (10 revisions)
- Arctanthemum arcticum (10 revisions)
- Erigeron uncialis (10 revisions)
- Pogonarthria squarrosa (10 revisions)
- Enteropogon prieurii (10 revisions)
- Paspalum distichum (10 revisions)
- Panicum mohavense (10 revisions)
- Aristida longespica var. geniculata (10 revisions)
- Vulpia microstachys var. pauciflora (10 revisions)
- Ptilagrostis kingii (10 revisions)
- Elymus virginicus var. intermedius (10 revisions)
- Carex viridula (10 revisions)
- Hypericum nitidum (10 revisions)
- Selaginella ludoviciana (10 revisions)
- Eriogonum umbellatum (10 revisions)
- Eriogonum microtheca var. microtheca (10 revisions)
- Pedicularis palustris (10 revisions)
- Microchloa (10 revisions)
- Potamogeton pusillus (10 revisions)
- Paspalum convexum (10 revisions)
- Panicum dichotomiflorum subsp. puritanorum (10 revisions)
- Rhododendron minus (10 revisions)
- Aristida rhizomophora (10 revisions)
- Puccinellia fasciculata (10 revisions)
- Celtica (10 revisions)
- Elymus glaucus subsp. virescens (10 revisions)
- Ranunculus repens (10 revisions)
- Penstemon cyananthus (10 revisions)
- Penstemon spectabilis (10 revisions)
- Sequoiadendron giganteum (10 revisions)
- Braya thorild-wulffii (10 revisions)
- Helenium amarum (10 revisions)
- Eremogone kingii (10 revisions)
- Philadelphus microphyllus (10 revisions)
- Sporobolus creber (10 revisions)
- Paspalum setaceum var. psammophilum (10 revisions)
- Panicum rigidulum subsp. combsii (10 revisions)
- Sphaeralcea fendleri (10 revisions)
- Chasmanthium nitidum (10 revisions)
- Poaceae tribe Nardeae (10 revisions)
- Piptochaetium avenaceum (10 revisions)
- Leersia oryzoides (10 revisions)
- Calamagrostis muiriana (10 revisions)
- Swallenia alexandrae (10 revisions)
- Leptochloa fusca subsp. fascicularis (10 revisions)
- Paspalum pubiflorum (10 revisions)
- Panicum antidotale (10 revisions)
- Digitaria tomentosa (10 revisions)
- Lamarckia aurea (10 revisions)
- Nassella cernua (10 revisions)
- Elymus lanceolatus subsp. riparius (10 revisions)
- Calamagrostis canadensis var. canadensis (10 revisions)
- Androsace chamaejasme (10 revisions)
- Hypericum ascyron (10 revisions)
- Atriplex wolfii (10 revisions)
- Orcuttia viscida (10 revisions)
- Bouteloua hirsuta subsp. hirsuta (10 revisions)
- Eucephalus ledophyllus (10 revisions)
- Saccharum coarctatum (10 revisions)
- Eragrostis ciliaris var. ciliaris (10 revisions)
- Poa wolfii (10 revisions)
- Austrostipa ramosissima (10 revisions)
- Avena hybrida (10 revisions)
- Opizia (10 revisions)
- Heterotheca subaxillaris (10 revisions)
- Digitaria arenicola (10 revisions)
- Psilotaceae (10 revisions)
- Digitaria nuda (10 revisions)
- Arctophila (10 revisions)
- Poa pratensis (10 revisions)
- Bromus arizonicus (10 revisions)
- ×elyleymus ontariensis (10 revisions)
- Melica torreyana (10 revisions)
- Penstemon montanus (10 revisions)
- Tetraneuris scaposa (10 revisions)
- Dieteria canescens (10 revisions)
- Erigeron glacialis (10 revisions)
- Sorghastrum elliottii (10 revisions)
- Sporobolus cryptandrus (10 revisions)
- Melinis minutiflora (10 revisions)
- Lasiacis divaricata (10 revisions)
- Briza maxima (10 revisions)
- Poa bolanderi (10 revisions)
- Bromus laevipes (10 revisions)
- Zizania aquatica var. brevis (10 revisions)
- Thalictrum alpinum (10 revisions)
- Stellaria cuspidata (10 revisions)
- Bulbostylis ciliatifolia (10 revisions)
- Atriplex acanthocarpa (10 revisions)
- Pappophorum vaginatum (10 revisions)
- Bothriochloa laguroides (10 revisions)
- Crypsis (10 revisions)
- Urochloa subquadripara (10 revisions)
- Echinochloa oplismenoides (10 revisions)
- Sphenopholis filiformis (10 revisions)
- Poa cuspidata (10 revisions)
- Bromus suksdorfii (10 revisions)
- Leymus salina subsp. salina (10 revisions)
- Phalaris brachystachys (10 revisions)
- Ranunculus gmelinii (10 revisions)
- Penstemon gairdneri (10 revisions)
- Scleria ciliata (10 revisions)
- Leptochloa chinensis (10 revisions)
- Polanisia erosa (10 revisions)
- Eragrostis refracta (10 revisions)
- Muhlenbergia mexicana (10 revisions)
- Eriochloa fatmensis (10 revisions)
- Dichanthelium sect. Macrocarpa (10 revisions)
- Deschampsia elongata (10 revisions)
- Poa fendleriana subsp. fendleriana (10 revisions)
- Poterium sanguisorba (10 revisions)
- Bromus rubens (10 revisions)
- Thinopyrum (10 revisions)
- Castilleja campestris (10 revisions)
- Ammophila (10 revisions)
- Penstemon humilis (10 revisions)
- Pyrrocoma clementis (10 revisions)
- Boechera breweri (10 revisions)
- Danthonia californica (10 revisions)
- Crataegus viridis (10 revisions)
- Andropogon gyrans (10 revisions)
- Dasyochloa (10 revisions)
- Aspidotis californica (10 revisions)
- Pennisetum macrourum (10 revisions)
- Eragrostis trichophora (10 revisions)
- Agrostis perennans (10 revisions)
- Poa arachnifera (10 revisions)
- Bromus lanceolatus (10 revisions)
- Festuca paradoxa (10 revisions)
- Alopecurus aequalis var. sonomensis (10 revisions)
- Rorippa palustris (10 revisions)
- Polygonum sawatchense (10 revisions)
- Eriogonum fasciculatum (10 revisions)
- Poaceae tribe Aristideae (10 revisions)
- Potentilla glaucophylla (10 revisions)
- Andropogon glomeratus var. scabriglumis (10 revisions)
- Muhlenbergia dumosa (10 revisions)
- Dryopteris campyloptera (10 revisions)
- Cenchrus brownii (10 revisions)
- Dichanthelium acuminatum subsp. sericeum (10 revisions)
- Glyceria sect. Glyceria (10 revisions)
- Oryza (10 revisions)
- Festuca thurberi (10 revisions)
- Poa unilateralis (10 revisions)
- Verbascum thapsus (10 revisions)
- Eutrochium purpureum (10 revisions)
- Physaria hitchcockii (10 revisions)
- Croton glandulosus (10 revisions)
- Boechera fernaldiana (10 revisions)
- Aristida gypsophila (10 revisions)
- Schizachyrium littorale (10 revisions)
- Muhlenbergia crispiseta (10 revisions)
- Setaria subg. Ptychophyllum (10 revisions)
- Eragrostis setifolia (10 revisions)
- Lagurus ovatus (10 revisions)
- Poa sect. Secundae (10 revisions)
- Eremopyrum orientale (10 revisions)
- Festuca rubra subsp. rubra (10 revisions)
- Melica mutica (10 revisions)
- Melica nitens (10 revisions)
- Euphorbia polycarpa (10 revisions)
- Oreostemma alpigenum (10 revisions)
- Muhlenbergia depauperata (10 revisions)
- Setaria leucopila (10 revisions)
- Dichanthelium erectifolium (10 revisions)
- Sesleria heufleriana (10 revisions)
- Glyceria obtusa (10 revisions)
- Aegilops triuncialis (10 revisions)
- Festuca brevissima (10 revisions)
- Ampelodesmos (10 revisions)
- Artemisia laciniata (10 revisions)
- Sagina maxima (10 revisions)
- Kochia scoparia (10 revisions)
- Eremochloa ophiuroides (10 revisions)
- Chloris canterae (10 revisions)
- Setaria viridis var. major (10 revisions)
- Dichanthelium sect. Strigosa (10 revisions)
- Sidalcea hickmanii (10 revisions)
- Scribneria bolanderi (10 revisions)
- Luziola peruviana (10 revisions)
- Achnatherum parishii subsp. depauperatum (10 revisions)
- Sairocarpus vexillocalyculatus (10 revisions)
- Pedicularis centranthera (10 revisions)
- Corispermum hookeri (10 revisions)
- Delphinium nuttallii subsp. ochroleucum (10 revisions)
- Zea luxurians (10 revisions)
- Chloris texensis (10 revisions)
- Salix humilis (10 revisions)
- Steinchisma (10 revisions)
- Panicum miliaceum subsp. ruderale (10 revisions)
- Dissanthelium (10 revisions)
- Prunus fasciculata (10 revisions)
- Schedonorus pratensis (10 revisions)
- Achnatherum curvifolium (10 revisions)
- Eleocharis mamillata (10 revisions)
- Brickellia eupatorioides (10 revisions)
- Vaseyochloa (10 revisions)
- Enteropogon dolichostachyus (10 revisions)
- Paspalum vaginatum (10 revisions)
- Panicum psilopodium (10 revisions)
- Aristida longespica var. longespica (10 revisions)
- Brachyelytrum (10 revisions)
- Ptilagrostis porteri (10 revisions)
- Elymus virginicus var. jejunus (10 revisions)
- Juncus stygius (10 revisions)
- Leptochloa chloridiformis (10 revisions)
- Amelanchier alnifolia (10 revisions)
- Paspalum plicatulum (10 revisions)
- Panicum paludosum (10 revisions)
- Sphaeralcea angustifolia (10 revisions)
- Aristida mohrii (10 revisions)
- Elymus hirsutus (10 revisions)
- Sassafras albidum (10 revisions)
- Luffa acutangula (10 revisions)
- Opuntia ×vaseyi (10 revisions)
- Sporobolus diandrus (10 revisions)
- Amelanchier canadensis (10 revisions)
- Paspalum setaceum var. rigidifolium (10 revisions)
- Panicum rigidulum subsp. elongatum (10 revisions)
- Cirsium pumilum (10 revisions)
- Chasmanthium ornithorhynchum (10 revisions)
- Puccinellia howellii (10 revisions)
- Piptochaetium avenacioides (10 revisions)
- Elymus elymoides subsp. hordeoides (10 revisions)
- Calamagrostis breweri (10 revisions)
- Dryopteris carthusiana (10 revisions)
- Arabidopsis lyrata (10 revisions)
- Pectis filipes (10 revisions)
- Distichlis (10 revisions)
- Bouteloua curtipendula var. curtipendula (10 revisions)
- Chrysopsis gossypina (10 revisions)
- Paspalum floridanum (10 revisions)
- Eragrostis pilosa var. pilosa (10 revisions)
- Digitaria gracillima (10 revisions)
- Beckmannia (10 revisions)
- Nassella tenuissima (10 revisions)
- Elymus stebbinsii (10 revisions)
- Calamagrostis canadensis var. langsdorffii (10 revisions)
- Transberingia bursifolia (10 revisions)
- Bouteloua hirsuta subsp. pectinata (10 revisions)
- Pityopsis graminifolia (10 revisions)
- Saccharum baldwinii (10 revisions)
- Kalmia microphylla (10 revisions)
- Digitaria floridana (10 revisions)
- Poa unilateralis subsp. pachypholis (10 revisions)
- Poa sect. Arenariae (10 revisions)
- Drymocallis lactea (10 revisions)
- Poaceae tribe Brachypodieae (10 revisions)
- Elymus ×cayouetteorum (10 revisions)
- Avena occidentalis (10 revisions)
- Adenophyllum wrightii (10 revisions)
- Opizia stolonifera (10 revisions)
- Limnanthes alba (10 revisions)
- Imperata cylindrica (10 revisions)
- Tridens texanus (10 revisions)
- Digitaria sanguinalis (10 revisions)
- Arctophila fulva (10 revisions)
- Misopates orontium (10 revisions)
- Bromus aleutensis (10 revisions)
- ×elyleymus uclueletensis (10 revisions)
- Trisetum cernuum (10 revisions)
- Jamesia americana (10 revisions)
- Atriplex elegans (10 revisions)
- Hilaria belangeri var. longifolia (10 revisions)
- Geum triflorum (10 revisions)
- Sorghastrum secundum (10 revisions)
- Sporobolus contractus (10 revisions)
- Eragrostis pectinacea var. miserrima (10 revisions)
- Lasiacis ruscifolia (10 revisions)
- Briza minor (10 revisions)
- Poaceae tribe Meliceae (10 revisions)
- Bromus kalmii (10 revisions)
- Leymus mollis subsp. villosissimus (10 revisions)
- Seymeria pectinata (10 revisions)
- Anthoxanthum aristatum (10 revisions)
- Senecio serra (10 revisions)
- Tetradymia axillaris (10 revisions)
- Enneapogon (10 revisions)
- Chenopodium capitatum (10 revisions)
- Heterotheca villosa (10 revisions)
- Bothriochloa longipaniculata (10 revisions)
- Crypsis alopecuroides (10 revisions)
- Urochloa plantaginea (10 revisions)
- Echinochloa colona (10 revisions)
- Sphenopholis obtusata (10 revisions)
- Piriqueta cistoides (10 revisions)
- Poa nervosa (10 revisions)
- Bromus mucroglumis (10 revisions)
- Leymus salina subsp. salmonis (10 revisions)
- Castilleja angustifolia (10 revisions)
- Melica bulbosa (10 revisions)
- Physaria carinata (10 revisions)
- Euphorbia geyeri (10 revisions)
- Neostapfia (10 revisions)
- Apluda mutica (10 revisions)
- Muhlenbergia californica (10 revisions)
- Eriochloa lemmonii (10 revisions)
- Dichanthelium latifolium (10 revisions)
- Deschampsia danthonioides (10 revisions)
- Poa fendleriana subsp. longiligula (10 revisions)
- Thinopyrum intermedium (10 revisions)
- Ammophila breviligulata (10 revisions)
- Betula minor (10 revisions)
- Danthonia unispicata (10 revisions)
- Andropogon gyrans var. gyrans (10 revisions)
- Muhlenbergia glauca (10 revisions)
- Pennisetum alopecuroides (10 revisions)
- Dichanthelium oligosanthes (10 revisions)
- Agrostis idahoensis (10 revisions)
- Poa sect. Pandemos (10 revisions)
- Bromus scoparius (10 revisions)
- Festuca subg. Subulatae (10 revisions)
- Alopecurus rendlei (10 revisions)
- Symphyotrichum patens (10 revisions)
- Viola praemorsa (10 revisions)
- Eupatorium rotundifolium (10 revisions)
- Stenotus armerioides (10 revisions)
- Physaria geyeri (10 revisions)
- Liatris squarrosa (10 revisions)
- Molinia (10 revisions)
- Muhlenbergia villiflora (10 revisions)
- Juncus ensifolius (10 revisions)
- Cenchrus echinatus (10 revisions)
- Dichanthelium acuminatum subsp. spretum (10 revisions)
- Agrostis elliottiana (10 revisions)
- Poa glauca var. pekulnejensis (10 revisions)
- Hordeum jubatum subsp. jubatum (10 revisions)
- Festuca californica (10 revisions)
- Arctagrostis latifolia (10 revisions)
- Penstemon nitidus (10 revisions)
- Artemisia tridentata (10 revisions)
- Luzula multiflora subsp. kobayasii (10 revisions)
- Aristida ramosissima (10 revisions)
- Hemiscola aculeata (10 revisions)
- Erigeron pumilus (10 revisions)
- Schizachyrium tenerum (10 revisions)
- Muhlenbergia peruviana (10 revisions)
- Eragrostis gangetica (10 revisions)
- Dichanthelium dichotomum subsp. nitidum (10 revisions)
- Phleum (10 revisions)
- Poa subsect. Secundae (10 revisions)
- Eremopyrum (10 revisions)
- Festuca rubra subsp. secunda (10 revisions)
- Ivesia rhypara (10 revisions)
- Dasypyrum (10 revisions)
- Festuca rubra subsp. vallicola (10 revisions)
- Melica ciliata (10 revisions)
- Symphyotrichum drummondii (10 revisions)
- Eleocharis compressa (10 revisions)
- Gymnocarpium robertianum (10 revisions)
- Carex muehlenbergii (10 revisions)
- Sagina nodosa (10 revisions)
- Physaria lepidota (10 revisions)
- Crataegus texana (10 revisions)
- Themeda arguens (10 revisions)
- Carex lenticularis (10 revisions)
- Setaria scheelei (10 revisions)
- Dichanthelium polyanthes (10 revisions)
- Sesleria caerulea (10 revisions)
- Melochia tomentosa (10 revisions)
- Aegilops geniculata (10 revisions)
- Festuca brachyphylla (10 revisions)
- Ampelodesmos mauritanicus (10 revisions)
- Eremochloa ciliaris (10 revisions)
- Chloris canterae var. canterae (10 revisions)
- Osmunda cinnamomea (10 revisions)
- Eragrostis obtusiflora (10 revisions)
- Dichanthelium laxiflorum (10 revisions)
- Hainardia (10 revisions)
- Festuca viviparoidea (10 revisions)
- Achnatherum parishii subsp. parishii (10 revisions)
- Betula neoalaskana (10 revisions)
- Hemizonia congesta (10 revisions)
- Lechea maritima (10 revisions)
- Zea mays (10 revisions)
- Munroa squarrosa (10 revisions)
- Steinchisma hians (10 revisions)
- Panicum capillare (10 revisions)
- Dissanthelium californicum (10 revisions)
- Schedonorus giganteus (10 revisions)
- Phyllostachys (10 revisions)
- ×elyhordeum jordalii (10 revisions)
- Vaseyochloa multinervosa (10 revisions)
- Trichloris (10 revisions)
- Eragrostis curtipedicellata (10 revisions)
- Panicum capillarioides (10 revisions)
- Aristida adscensionis (10 revisions)
- Vulpia microstachys var. ciliata (10 revisions)
- Piptatherum (10 revisions)
- Elymus virginicus var. virginicus (10 revisions)
- Penstemon fruticiformis (10 revisions)
- Eruca vesicaria (10 revisions)
- Solidago caesia (10 revisions)
- Eriogonum microtheca var. schoolcraftii (10 revisions)
- Guilleminea densa (10 revisions)
- Pedicularis parryi (10 revisions)
- Sporobolus pyramidatus (10 revisions)
- Microchloa kunthii (10 revisions)
- Paspalum wrightii (10 revisions)
- Panicum sect. Repentia (10 revisions)
- Aristida simpliciflora (10 revisions)
- Puccinellia simplex (10 revisions)
- Stipa (10 revisions)
- Elymus dahuricus (10 revisions)
- Claytonia parviflora (10 revisions)
- Hypochaeris microcephala (10 revisions)
- Helianthus petiolaris (10 revisions)
- Centaurea virgata (10 revisions)
- Sporobolus fimbriatus (10 revisions)
- Eragrostis plana (10 revisions)
- Panicum rigidulum subsp. pubescens (10 revisions)
- Chasmanthium sessiliflorum (10 revisions)
- Puccinellia nuttalliana (10 revisions)
- Piptochaetium fimbriatum (10 revisions)
- Elymus trachycaulus (10 revisions)
- Calamagrostis deschampsioides (10 revisions)
- Delphinium barbeyi (10 revisions)
- Helenium elegans (10 revisions)
- Cerastium alpinum (10 revisions)
- Hymenopappus artemisiifolius (10 revisions)
- Atriplex argentea (10 revisions)
- Distichlis spicata (10 revisions)
- Bouteloua warnockii (10 revisions)
- Paspalum unispicatum (10 revisions)
- Panicum subg. Phanopyrum (10 revisions)
- Digitaria bakeri (10 revisions)
- Beckmannia syzigachne (10 revisions)
- Elymus stebbinsii subsp. septentrionalis (10 revisions)
- Ribes oxyacanthoides (10 revisions)
- Lewisia cotyledon (10 revisions)
- Androsace elongata (10 revisions)
- Xanthisma grindelioides (10 revisions)
- Silphium terebinthinaceum (10 revisions)
- Tridens strictus (10 revisions)
- Bouteloua eriopoda (10 revisions)
- Saccharum ravennae (10 revisions)
- Digitaria ischaemum (10 revisions)
- Poa unilateralis subsp. unilateralis (10 revisions)
- Poa bulbosa (10 revisions)
- Brachypodium (10 revisions)
- Elymus ×palmerensis (10 revisions)
- Avena sativa (10 revisions)
- Juncus triglumis (10 revisions)
- Buchloë (10 revisions)
- Polytrias (10 revisions)
- Digitaria bicornis (10 revisions)
- Torreyochloa (10 revisions)
- Poa pratensis subsp. alpigena (10 revisions)
- Bromus maritimus (10 revisions)
- Trisetum flavescens (10 revisions)
- Carex communis (10 revisions)
- Crepis bakeri (10 revisions)
- Asteraceae Illustrations (10 revisions)
- Hilaria swallenii (10 revisions)
- Rosa nutkana (10 revisions)
- Sorghastrum nutans (10 revisions)
- Sporobolus texanus (10 revisions)
- Melinis repens (10 revisions)
- Oplismenus (10 revisions)
- Poa howellii (10 revisions)
- Bromus pseudolaevipes (10 revisions)
- Leymus ×vancouverensis (10 revisions)
- Anthoxanthum odoratum (10 revisions)
- Enneapogon cenchroides (10 revisions)
- Bothriochloa exaristata (10 revisions)
- Crypsis schoenoides (10 revisions)
- Urochloa panicoides (10 revisions)
- Echinochloa frumentacea (10 revisions)
- Sphenopholis intermedia (10 revisions)
- Poa wheeleri (10 revisions)
- Leymus ambiguus (10 revisions)
- Phalaris canariensis (10 revisions)
- Crepis runcinata (10 revisions)
- Brickellia microphylla (10 revisions)
- Neostapfia colusana (10 revisions)
- Muhlenbergia andina (10 revisions)
- Carex tribuloides (10 revisions)
- Eriochloa punctata (10 revisions)
- Dichanthelium boscii (10 revisions)
- Deschampsia flexuosa (10 revisions)
- Triphysaria versicolor (10 revisions)
- Bromus briziformis (10 revisions)
- Thinopyrum intermedium subsp. barbulatum (10 revisions)
- Ammophila breviligulata subsp. breviligulata (10 revisions)
- Echinops ritro (10 revisions)
- Schismus (10 revisions)
- Andropogon gyrans var. stenophyllus (10 revisions)
- Muhlenbergia thurberi (10 revisions)
- Osmunda claytoniana (10 revisions)
- Pennisetum latifolium (10 revisions)
- Dichanthelium oligosanthes subsp. oligosanthes (10 revisions)
- Agrostis oregonensis (10 revisions)
- Poa trivialis (10 revisions)
- Bromus arenarius (10 revisions)
- Festuca sect. Subulatae (10 revisions)
- Alopecurus saccatus (10 revisions)
- Penstemon procerus (10 revisions)
- Artemisia arbuscula (10 revisions)
- Aristida desmantha (10 revisions)
- Erigeron poliospermus (10 revisions)
- Eragrostis prolifera (10 revisions)
- Muhlenbergia repens (10 revisions)
- Cenchrus gracillimus (10 revisions)
- Dichanthelium acuminatum subsp. thermale (10 revisions)
- Agrostis nebulosa (10 revisions)
- Poa glauca subsp. rupicola (10 revisions)
- Hordeum arizonicum (10 revisions)
- Festuca californica subsp. californica (10 revisions)
- Castilleja flava (10 revisions)
- Melica geyeri var. aristulata (10 revisions)
- Quercus sect. Quercus (10 revisions)
- Symphyotrichum ericoides (10 revisions)
- Saxifraga rivularis (10 revisions)
- Dryopteris expansa (10 revisions)
- Subularia aquatica (10 revisions)
- Cirsium edule (10 revisions)
- Colubrina cubensis (10 revisions)
- Boltonia asteroides (10 revisions)
- Schizachyrium niveum (10 revisions)
- Muhlenbergia emersleyi (10 revisions)
- Holodiscus microphyllus (10 revisions)
- Setaria barbata (10 revisions)
- Dichanthelium dichotomum subsp. roanokense (10 revisions)
- Phleum pratense (10 revisions)
- Poa secunda subsp. juncifolia (10 revisions)
- Adonis vernalis (9 revisions)
- Quercus muehlenbergii (9 revisions)
- Aquilegia formosa var. formosa (9 revisions)
- Ranunculus macranthus (9 revisions)
- Phegopteris (9 revisions)
- Asplenium serratum (9 revisions)
- Corrigiola litoralis (9 revisions)
- Cuniculotinus (9 revisions)
- Pinaceae (9 revisions)
- Isoëtaceae Illustrations (9 revisions)
- Coryphantha macromeris (9 revisions)
- Cylindropuntia arbuscula (9 revisions)
- Aconitum columbianum subsp. viviparum (9 revisions)
- Juncus vaseyi (9 revisions)
- Dennstaedtia punctilobula (9 revisions)
- Ranunculus fascicularis (9 revisions)
- Ranunculus sect. Flammula (9 revisions)
- Papaver gorodkovii (9 revisions)
- Thalictrum sect. Thalictrum (9 revisions)
- Anemia adiantifolia (9 revisions)
- Carex chordorrhiza (9 revisions)
- Selaginella mutica var. limitanea (9 revisions)
- Liliaceae Illustrations (9 revisions)
- Coryphantha hesteri (9 revisions)
- Cylindropuntia whipplei (9 revisions)
- Morus rubra (9 revisions)
- Sorbus subg. Sorbus (9 revisions)
- Humulus lupulus var. lupuloides (9 revisions)
- Liquidambar (9 revisions)
- Castanea pumila (9 revisions)
- Piper (9 revisions)
- Equisetum ×nelsonii (9 revisions)
- Pinus resinosa (9 revisions)
- Torreya californica (9 revisions)
- Moraceae Illustrations (9 revisions)
- Ariocarpus fissuratus var. fissuratus (9 revisions)
- Cylindropuntia acanthocarpa var. coloradensis (9 revisions)
- Delphinium californicum (9 revisions)
- Delphinium luteum (9 revisions)
- Iris (sect. Limniris) ser. Vernae (9 revisions)
- Aquilegia shockleyi (9 revisions)
- Eschscholzia rhombipetala (9 revisions)
- Ranunculus flammula var. ovalis (9 revisions)
- Thalictrum sparsiflorum (9 revisions)
- Pellaea ternifolia subsp. ternifolia (9 revisions)
- Polystichum kwakiutlii (9 revisions)
- Hymenophyllum wrightii (9 revisions)
- Eriogonum multiflorum (9 revisions)
- Orthotrichaceae Illustrations (9 revisions)
- Eriogonum subg. Eucycla (9 revisions)
- Nyctaginaceae (9 revisions)
- Crataegus ×sicca (9 revisions)
- Berberis bealei (9 revisions)
- Delphinium hesperium subsp. cuyamacae (9 revisions)
- Ficus microcarpa (9 revisions)
- Juncus hemiendytus var. hemiendytus (9 revisions)
- Chelone obliqua var. obliqua (9 revisions)
- Eriogonum deflexum (9 revisions)
- Poaceae Illustrations (9 revisions)
- Rumex (9 revisions)
- Opuntia engelmannii var. linguiformis (9 revisions)
- Anemone lyallii (9 revisions)
- Schizaea (9 revisions)
- Phemeranthus sediformis (9 revisions)
- Anemone virginiana var. cylindroidea (9 revisions)
- Ranunculus subg. Crymodes (9 revisions)
- Ceratopteris pteridoides (9 revisions)
- Rudbeckia texana (9 revisions)
- Argyrochosma fendleri (9 revisions)
- Eriogonum tenellum (9 revisions)
- Racopilaceae Illustrations (9 revisions)
- Opuntia microdasys (9 revisions)
- Atriplex sect. Pleianthae (9 revisions)
- Ranunculus pacificus (9 revisions)
- Athyrium filix-femina var. californicum (9 revisions)
- Delphinium depauperatum (9 revisions)
- Broussonetia papyrifera (9 revisions)
- Pteridaceae (9 revisions)
- Pinus glabra (9 revisions)
- Scheuchzeriaceae Illustrations (9 revisions)
- Sassafras (9 revisions)
- Actinostachys pennula (9 revisions)
- Podophyllum peltatum (9 revisions)
- Anemone virginiana var. alba (9 revisions)
- Magnolia fraseri (9 revisions)
- Aconitum maximum subsp. maximum (9 revisions)
- Keckiella cordifolia (9 revisions)
- Adiantum hispidulum (9 revisions)
- Styracaceae Illustrations (9 revisions)
- Ranunculus sect. Epirotes (9 revisions)
- Gymnocarpium disjunctum (9 revisions)
- Deeringothamnus (9 revisions)
- Diphylleia cymosa (9 revisions)
- Broussonetia (9 revisions)
- Delphinium antoninum (9 revisions)
- Ophioglossum californicum (9 revisions)
- Argyrochosma dealbata (9 revisions)
- Ulmaceae Illustrations (9 revisions)
- Cucurbita melopepo var. melopepo (9 revisions)
- Aloaceae Illustrations (9 revisions)
- Echinocereus papillosus (9 revisions)
- Mirabilis linearis var. subhispida (9 revisions)
- Asarum caudatum (9 revisions)
- Pentagramma (9 revisions)
- Quercus havardii (9 revisions)
- Ranunculus sect. Cyrtorhyncha (9 revisions)
- Caulophyllum thalictroides (9 revisions)
- Trollius laxus (9 revisions)
- Ceratopteris (9 revisions)
- Eriogonum marifolium (9 revisions)
- Aulacomniaceae Illustrations (9 revisions)
- Echinocereus berlandieri (9 revisions)
- Phytolacca bogotensis (9 revisions)
- Ranunculus californicus var. cuneatus (9 revisions)
- Huperzia (9 revisions)
- Kickxia spuria (9 revisions)
- Quercus durata (9 revisions)
- Nymphaeaceae (9 revisions)
- Menispermum canadense (9 revisions)
- Pellaea mucronata subsp. mucronata (9 revisions)
- Butomaceae Illustrations (9 revisions)
- Epiphyllum (9 revisions)
- Abronia argillosa (9 revisions)
- Liquidambar styraciflua (9 revisions)
- Carex argyrantha (9 revisions)
- Nephrolepis multiflora (9 revisions)
- Lindera subcoriacea (9 revisions)
- Platystemon californicus (9 revisions)
- Quercus tomentella (9 revisions)
- Carex scirpoidea subsp. scirpoidea (9 revisions)
- Polystichum aleuticum (9 revisions)
- Botrychium rugulosum (9 revisions)
- Ceratophyllaceae Illustrations (9 revisions)
- Abronia latifolia (9 revisions)
- Atriplex polycarpa (9 revisions)
- Chenopodium simplex (9 revisions)
- Peperomia pellucida (9 revisions)
- Delphinium tricorne (9 revisions)
- Baccharis douglasii (9 revisions)
- Parietaria floridana (9 revisions)
- Argemone gracilenta (9 revisions)
- Delphinium subsect. Grumosa (9 revisions)
- Tectaria (9 revisions)
- Viola orbiculata (9 revisions)
- Polystichum andersonii (9 revisions)
- Minuartia biflora (9 revisions)
- Isoëtes (9 revisions)
- Cyrillaceae Illustrations (9 revisions)
- Boerhavia wrightii (9 revisions)
- Pisonia rotundata (9 revisions)
- Delphinium parryi subsp. maritimum (9 revisions)
- Pentagramma triangularis (9 revisions)
- Eschscholzia (9 revisions)
- Hamamelis (9 revisions)
- Vancouveria chrysantha (9 revisions)
- Selaginella viridissima (9 revisions)
- Selaginella subg. Tetragonostachys (9 revisions)
- Ephemeraceae Illustrations (9 revisions)
- Sclerocactus polyancistrus (9 revisions)
- Cypselea (9 revisions)
- Thalictrum venulosum (9 revisions)
- Spiraea ×vanhouttei (9 revisions)
- Pinus washoensis (9 revisions)
- Argemone pleiacantha subsp. ambigua (9 revisions)
- Brasenia schreberi (9 revisions)
- Eschscholzia lobbii (9 revisions)
- Pinus contorta var. latifolia (9 revisions)
- Argyrochosma microphylla (9 revisions)
- Grimmiaceae Illustrations (9 revisions)
- Pediocactus paradinei (9 revisions)
- Malephora (9 revisions)
- Papaver hybridum (9 revisions)
- Carex recta (9 revisions)
- Pentagramma triangularis subsp. viscosa (9 revisions)
- Adiantum melanoleucum (9 revisions)
- Delphinium parryi subsp. eastwoodiae (9 revisions)
- Berberis fremontii (9 revisions)
- Ranunculus subg. Oxygraphis (9 revisions)
- Lomariopsis (9 revisions)
- Asplenium auritum (9 revisions)
- Pinus monticola (9 revisions)
- Iteaceae Illustrations (9 revisions)
- Coryphantha nickelsiae (9 revisions)
- Cylindropuntia ×tetracantha (9 revisions)
- Asplenium pumilum (9 revisions)
- Morus alba (9 revisions)
- Thalictrum mirabile (9 revisions)
- Asarum lemmonii (9 revisions)
- Tradescantia reverchonii (9 revisions)
- Juniperus monosperma (9 revisions)
- Chorizanthe brevicornu (9 revisions)
- Blechnum spicant (9 revisions)
- Limnanthaceae Illustrations (9 revisions)
- Coryphantha chlorantha (9 revisions)
- Cylindropuntia spinosior (9 revisions)
- Corydalis caseana subsp. brandegei (9 revisions)
- Pinus ponderosa var. ponderosa (9 revisions)
- Ranunculus acriformis var. acriformis (9 revisions)
- Stylomecon heterophylla (9 revisions)
- Quercus coccinea (9 revisions)
- Quercus vaseyana (9 revisions)
- Notholaena lemmonii (9 revisions)
- Polypodium (9 revisions)
- Moringaceae Illustrations (9 revisions)
- Lophophora (9 revisions)
- Cylindropuntia acanthocarpa var. major (9 revisions)
- Delphinium gracilentum (9 revisions)
- Eriocaulon compressum (9 revisions)
- Aristolochia clematitis (9 revisions)
- Crataegus ×atrorubens (9 revisions)
- Hydrastis canadensis (9 revisions)
- Hexastylis rhombiformis (9 revisions)
- Ranunculus testiculatus (9 revisions)
- Ranunculus sect. Halodes (9 revisions)
- Hymenophyllum tayloriae (9 revisions)
- Polystichum braunii (9 revisions)
- Cheilanthes leucopoda (9 revisions)
- Osmundaceae Illustrations (9 revisions)
- Oxalis frutescens subsp. angustifolia (9 revisions)
- Opuntia triacantha (9 revisions)
- Carya (9 revisions)
- Delphinium lineapetalum (9 revisions)
- Casuarina cunninghamiana subsp. cunninghamiana (9 revisions)
- Chelone obliqua var. speciosa (9 revisions)
- Pellaea wrightiana (9 revisions)
- Diplazium esculentum (9 revisions)
- Podostemaceae Illustrations (9 revisions)
- Eriogonum effusum (9 revisions)
- Opuntia engelmannii var. lindheimeri (9 revisions)
- Atriplex sect. Sclerocalymma (9 revisions)
- Enemion hallii (9 revisions)
- Pellaea glabella subsp. simplex (9 revisions)
- Iris (sect. Limniris) ser. Hexagonae (9 revisions)
- Phemeranthus spinescens (9 revisions)
- Trema micrantha (9 revisions)
- Urtica dioica subsp. holosericea (9 revisions)
- Ficus benghalensis (9 revisions)
- Collinsia greenei (9 revisions)
- Pityrogramma trifoliata (9 revisions)
- Ranunculaceae Illustrations (9 revisions)
- Eriogonum ericifolium (9 revisions)
- Boerhavia coccinea (9 revisions)
- Cheilanthes lendigera (9 revisions)
- Lindera melissifolia (9 revisions)
- Trema (9 revisions)
- Thalictrum dasycarpum (9 revisions)
- Cheilanthes wrightii (9 revisions)
- Pentagramma triangularis subsp. semipallida (9 revisions)
- Schisandraceae Illustrations (9 revisions)
- Opuntia polyacantha var. polyacantha (9 revisions)
- Mirabilis oxybaphoides (9 revisions)
- Myosurus apetalus var. montanus (9 revisions)
- Neurodium lanceolatum (9 revisions)
- Aquilegia chrysantha (9 revisions)
- Delphinium viridescens (9 revisions)
- Ficus religiosa (9 revisions)
- Argemone munita subsp. argentea (9 revisions)
- Lycopodium obscurum (9 revisions)
- Cheilanthes horridula (9 revisions)
- Symplocaceae Illustrations (9 revisions)
- Eichhornia crassipes (9 revisions)
- Acanthocereus tetragonus (9 revisions)
- Portulaca pilosa (9 revisions)
- Quercus arkansana (9 revisions)
- Bucklandiella affinis (9 revisions)
- Botrychium pedunculosum (9 revisions)
- Aloe (9 revisions)
- Arctostaphylos (9 revisions)
- Leitneriaceae (9 revisions)
- Quercus pagoda (9 revisions)
- Papaver alboroseum (9 revisions)
- Athyrium (9 revisions)
- Lomariopsis kunzeana (9 revisions)
- Herniaria hirsuta (9 revisions)
- Urticaceae Illustrations (9 revisions)
- Cucurbita melopepo subsp. texana (9 revisions)
- Amaranthaceae Illustrations (9 revisions)
- Echinocereus pectinatus (9 revisions)
- Anredera cordifolia (9 revisions)
- Clematis hirsutissima var. hirsutissima (9 revisions)
- Juncus acutus subsp. leopoldii (9 revisions)
- Thelypteris subg. Amauropelta (9 revisions)
- Aquilegia pubescens (9 revisions)
- Magnolia pyramidata (9 revisions)
- Juglans hindsii (9 revisions)
- Consolida ajacis (9 revisions)
- Tectaria heracleifolia (9 revisions)
- Azollaceae Illustrations (9 revisions)
- Echinocereus pentalophus (9 revisions)
- Mirabilis texensis (9 revisions)
- Delphinium subsect. Elata (9 revisions)
- Actinostachys (9 revisions)
- Quercus hypoleucoides (9 revisions)
- Ranunculus sardous (9 revisions)
- Botrychium dissectum (9 revisions)
- Juncus supiniformis (9 revisions)
- Trichomanes (9 revisions)
- Xylorhiza (9 revisions)
- Buxbaumiaceae Illustrations (9 revisions)
- Abronia carletonii (9 revisions)
- Actaea (9 revisions)
- Isoëtes boomii (9 revisions)
- Nothocalaïs cuspidata (9 revisions)
- Delphinium variegatum subsp. thornei (9 revisions)
- Nelumbo nucifera (9 revisions)
- Myosurus (9 revisions)
- Callitris glaucophylla (9 revisions)
- Cheilanthes cooperae (9 revisions)
- Oönopsis engelmannii (9 revisions)
- Chenopodiaceae Illustrations (9 revisions)
- Echinocactus polycephalus var. polycephalus (9 revisions)
- Phytolacca octandra (9 revisions)
- Canella (9 revisions)
- Juncus hemiendytus (9 revisions)
- Carya myristiciformis (9 revisions)
- Saururus cernuus (9 revisions)
- Hexastylis (9 revisions)
- Ranunculus sceleratus var. sceleratus (9 revisions)
- Asplenium heterochroum (9 revisions)
- Zamia (9 revisions)
- Laënnecia eriophylla (9 revisions)
- Anemia mexicana (9 revisions)
- Daltoniaceae Illustrations (9 revisions)
- Echinomastus intertextus var. dasyacanthus (9 revisions)
- Guapira (9 revisions)
- Botrychium gallicomontanum (9 revisions)
- Nigella damascena (9 revisions)
- Cryptogramma (9 revisions)
- Amphiachyris amoena (9 revisions)
- Pseudotsuga macrocarpa (9 revisions)
- Equisetaceae Illustrations (9 revisions)
- Sclerocactus nyensis (9 revisions)
- Cypselea humifusa (9 revisions)
- Delphinium carolinianum subsp. calciphilum (9 revisions)
- Eurhynchiastrum pulchellum var. barnesii (9 revisions)
- Thuja (9 revisions)
- Quercus prinoides (9 revisions)
- Clematis occidentalis var. dissecta (9 revisions)
- Leitneria (9 revisions)
- Pteris cretica var. cretica (9 revisions)
- Pellaea bridgesii (9 revisions)
- Picea pungens (9 revisions)
- Grossulariaceae Illustrations (9 revisions)
- Petiveria (9 revisions)
- Malephora crocea (9 revisions)
- Liriodendron (9 revisions)
- Ranunculus californicus (9 revisions)
- Taxus brevifolia (9 revisions)
- Quercus falcata (9 revisions)
- Carya laciniosa (9 revisions)
- Fagus (9 revisions)
- Isoëtes lithophila (9 revisions)
- Pleopeltis astrolepis (9 revisions)
- Trichomanes intricatum (9 revisions)
- Juglandaceae Illustrations (9 revisions)
- Coryphantha ramillosa (9 revisions)
- Cylindropuntia kleiniae (9 revisions)
- Ranunculus kamtschaticus (9 revisions)
- Juglans microcarpa (9 revisions)
- Clematis (9 revisions)
- Clematis addisonii (9 revisions)
- Taxus floridana (9 revisions)
- Coreopsis tinctoria (9 revisions)
- Eriogonum elatum (9 revisions)
- Limnocharitaceae Illustrations (9 revisions)
- Coryphantha alversonii (9 revisions)
- Pinus radiata (9 revisions)
- Pilea pumila (9 revisions)
- Delphinium stachydeum (9 revisions)
- Delphinium multiplex (9 revisions)
- Quercus cornelius-mulleri (9 revisions)
- Thelypteris (9 revisions)
- Polystichum (9 revisions)
- Vittaria (9 revisions)
- Muntingiaceae Illustrations (9 revisions)
- Lophophora williamsii (9 revisions)
- Cylindropuntia wolfii (9 revisions)
- Quercus boyntonii (9 revisions)
- Macleaya cordata (9 revisions)
- Crataegus ×bicknellii (9 revisions)
- Dicentra formosa subsp. formosa (9 revisions)
- Hydrastis (9 revisions)
- Meconella oregana (9 revisions)
- Cheilanthes gracillima (9 revisions)
- Selaginella tortipila (9 revisions)
- Paeoniaceae Illustrations (9 revisions)
- Opuntia cubensis (9 revisions)
- Hexastylis lewisii (9 revisions)
- Ranunculus alismifolius var. montanus (9 revisions)
- Casuarina equisetifolia subsp. equisetifolia (9 revisions)
- Betula (9 revisions)
- Clematis texensis (9 revisions)
- Chelone obliqua var. erwiniae (9 revisions)
- Botrychium echo (9 revisions)
- Braya glabella subsp. prostrata (9 revisions)
- Astrolepis (9 revisions)
- Astrolepis sinuata subsp. mexicana (9 revisions)
- Polygonaceae Illustrations (9 revisions)
- Opuntia engelmannii var. flavispina (9 revisions)
- Nymphaea mexicana (9 revisions)
- Phlegmariurus (9 revisions)
- Phemeranthus teretifolius (9 revisions)
- Berberis dictyota (9 revisions)
- Ranunculus recurvatus var. recurvatus (9 revisions)
- Aristolochia maxima (9 revisions)
- Collinsia linearis (9 revisions)
- Sequoia sempervirens (9 revisions)
- Resedaceae Illustrations (9 revisions)
- Opuntia rufida (9 revisions)
- Ranunculus parviflorus (9 revisions)
- Azolla caroliniana (9 revisions)
- Argemone squarrosa subsp. glabrata (9 revisions)
- Quercus buckleyi (9 revisions)
- Ranunculus cooleyae (9 revisions)
- Pteridium aquilinum var. caudatum (9 revisions)
- Schistostegaceae Illustrations (9 revisions)
- Opuntia polyacantha var. arenaria (9 revisions)
- Deeringothamnus rugelii (9 revisions)
- Asplenium monanthes (9 revisions)
- Anemone oregana var. felix (9 revisions)
- Delphinium geraniifolium (9 revisions)
- Cheilanthes wootonii (9 revisions)
- Arisaema triphyllum (9 revisions)
- Woodsia obtusa subsp. occidentalis (9 revisions)
- Takakiaceae Illustrations (9 revisions)
- Agdestis clematidea (9 revisions)
- Portulaca rubricaulis (9 revisions)
- Ceratophyllaceae (9 revisions)
- Vittariaceae (9 revisions)
- Nymphaea leibergii (9 revisions)
- Papaver sect. Rhoeadium (9 revisions)
- Delphinium exaltatum (9 revisions)
- Ranunculus acriformis var. aestivalis (9 revisions)
- Thelypteris resinifera (9 revisions)
- Picea rubens (9 revisions)
- Eriogonum luteolum (9 revisions)
- Violaceae Illustrations (9 revisions)
- Amblystegiaceae Illustrations (9 revisions)
- Echinocereus pectinatus var. wenigeri (9 revisions)
- Anredera vesicaria (9 revisions)
- Erigeron uniflorus var. eriocephalus (9 revisions)
- Carex microdonta (9 revisions)
- Delphinium subsect. Wislizenana (9 revisions)
- Selaginella asprella (9 revisions)
- Peperomia magnoliifolia (9 revisions)
- Cannabaceae (9 revisions)
- Isoëtes maritima (9 revisions)
- Pentagramma pallida (9 revisions)
- Eriogonum baileyi (9 revisions)
- Bartramiaceae Illustrations (9 revisions)
- Echinocereus chisosensis (9 revisions)
- Nyctaginia (9 revisions)
- Humulus lupulus var. pubescens (9 revisions)
- Polypodium saximontanum (9 revisions)
- Asimina triloba (9 revisions)
- Cannabis (9 revisions)
- Eriogonum flavum (9 revisions)
- Cabombaceae Illustrations (9 revisions)
- Epiphyllum phyllanthus var. hookeri (9 revisions)
- Abronia maritima (9 revisions)
- Persea palustris (9 revisions)
- Salvinia minima (9 revisions)
- Nothocalaïs nigrescens (9 revisions)
- Anemone acutiloba (9 revisions)
- Quercus toumeyi (9 revisions)
- Pinus albicaulis (9 revisions)
- Azolla mexicana (9 revisions)
- Thelypteris reptans (9 revisions)
- Cistaceae Illustrations (9 revisions)
- Vitaceae (9 revisions)
- Echinocactus polycephalus var. xeranthemoides (9 revisions)
- Dendromecon harfordii (9 revisions)
- Botrychium biternatum (9 revisions)
- Caltha leptosepala (9 revisions)
- Ficus carica (9 revisions)
- Helleborus (9 revisions)
- Pinus attenuata (9 revisions)
- Datiscaceae Illustrations (9 revisions)
- Guapira discolor (9 revisions)
- Ulmus alata (9 revisions)
- Pinus jeffreyi (9 revisions)
- Thalictrum arkansanum (9 revisions)
- Ranunculaceae (9 revisions)
- Berberis darwinii (9 revisions)
- Argemone ochroleuca (9 revisions)
- Juniperus occidentalis var. australis (9 revisions)
- Selaginella rupestris (9 revisions)
- Vittaria appalachiana (9 revisions)
- Ericaceae Illustrations (9 revisions)
- Sclerocactus papyracanthus (9 revisions)
- Trichostigma (9 revisions)
- Nymphaea lotus (9 revisions)
- Trichomanes holopterum (9 revisions)
- Agave utahensis var. eborispina (9 revisions)
- Carya tomentosa (9 revisions)
- Adonis aestivalis (9 revisions)
- Aquilegia brevistyla (9 revisions)
- Botrychium simplex (9 revisions)
- Selaginella wrightii (9 revisions)
- Haemodoraceae Illustrations (9 revisions)
- Boerhavia torreyana (9 revisions)
- Delosperma (9 revisions)
- Mirabilis sect. Quamoclidion (9 revisions)
- Crataegus ×rufula (9 revisions)
- Ficus citrifolia (9 revisions)
- Asplenium exiguum (9 revisions)
- Ivesia sect. Ivesia (9 revisions)
- Lindera (9 revisions)
- Delphinium patens (9 revisions)
- Delphinium hansenii subsp. hansenii (9 revisions)
- Pityrogramma (9 revisions)
- Pellaea mucronata subsp. californica (9 revisions)
- Pseudotsuga menziesii var. menziesii (9 revisions)
- Juncaceae Illustrations (9 revisions)
- Coryphantha recurvata (9 revisions)
- Agdestis (9 revisions)
- Anemone drummondii var. lithophila (9 revisions)
- Thelypteris hispidula var. versicolor (9 revisions)
- Corydalis aurea subsp. occidentalis (9 revisions)
- Menispermaceae (9 revisions)
- Isoëtes howellii (9 revisions)
- Pilularia (9 revisions)
- Botrychium acuminatum (9 revisions)
- Lycopodiaceae Illustrations (9 revisions)
- Boerhavia coulteri var. palmeri (9 revisions)
- Cylindropuntia imbricata var. imbricata (9 revisions)
- Quercus incana (9 revisions)
- Delphinium hesperium (9 revisions)
- Ranunculus hispidus var. nitidus (9 revisions)
- Coptis aspleniifolia (9 revisions)
- Xyris fimbriata (9 revisions)
- Woodsia oregana subsp. cathcartiana (9 revisions)
- Polypodium calirhiza (9 revisions)
- Spergularia media (9 revisions)
- Eriophorum callitrix (9 revisions)
- Eriogonum alatum (9 revisions)
- Musaceae Illustrations (9 revisions)
- Ferocactus (9 revisions)
- Cylindropuntia ramosissima (9 revisions)
- Ranunculus orthorhynchus var. orthorhynchus (9 revisions)
- Crataegus ×coleae (9 revisions)
- Quercus velutina (9 revisions)
- Sanguinaria (9 revisions)
- Papaver sect. Californicum (9 revisions)
- Oncosiphon (9 revisions)
- Asplenium resiliens (9 revisions)
- Polystichum kruckebergii (9 revisions)
- Drymaria glandulosa (9 revisions)
- Pinus clausa (9 revisions)
- Papaveraceae Illustrations (9 revisions)
- Krameria lanceolata (9 revisions)
- Magnolia grandiflora (9 revisions)
- Tsuga (9 revisions)
- Aquilegia jonesii (9 revisions)
- Enemion occidentale (9 revisions)
- Chionophila (9 revisions)
- Isoëtes melanopoda (9 revisions)
- Braya glabella subsp. purpurascens (9 revisions)
- Microgramma (9 revisions)
- Silene greenei subsp. angustifolia (9 revisions)
- Blechnum occidentale var. minor (9 revisions)
- Polypodiaceae Illustrations (9 revisions)
- Eriogonum leptocladon (9 revisions)
- Opuntia engelmannii var. flexispina (9 revisions)
- Nymphaea capensis (9 revisions)
- Rosaceae tribe Exochordeae (9 revisions)
- Phemeranthus thompsonii (9 revisions)
- Maclura (9 revisions)
- Ranunculus glaberrimus var. glaberrimus (9 revisions)
- Platystemon (9 revisions)
- Collinsia rattanii (9 revisions)
- Psilotum nudum (9 revisions)
- Deparia (9 revisions)
- Rhachitheciaceae Illustrations (9 revisions)
- Eriogonum corymbosum (9 revisions)
- Opuntia ficus-indica (9 revisions)
- Dicentra chrysantha (9 revisions)
- Macrothelypteris (9 revisions)
- Coleogyne ramosissima (9 revisions)
- Myosurus cupulatus (9 revisions)
- Delphinium newtonianum (9 revisions)
- Corylus (9 revisions)
- Isoëtes engelmannii (9 revisions)
- Tectaria incisa (9 revisions)
- Schizaeaceae Illustrations (9 revisions)
- Eriogonum thompsoniae (9 revisions)
- Opuntia polyacantha var. nicholii (9 revisions)
- Atriplex argentea var. longitrichoma (9 revisions)
- Anemone virginiana var. virginiana (9 revisions)
- Pleopeltis polypodioides var. michauxiana (9 revisions)
- Consolida pubescens (9 revisions)
- Aquilegia coerulea var. ochroleuca (9 revisions)
- Ranunculus pusillus (9 revisions)
- Anemone oregana var. oregana (9 revisions)
- Ephedra funerea (9 revisions)
- Isoëtes bolanderi (9 revisions)
- Tephroseris lindstroemii (9 revisions)
- Helianthus mollis (9 revisions)
- Tamaricaceae Illustrations (9 revisions)
- Boerhavia ciliata (9 revisions)
- Portulaca smallii (9 revisions)
- Aquilegia hinckleyana (9 revisions)
- Clematis viticaulis (9 revisions)
- Argemone albiflora subsp. texana (9 revisions)
- Myrica hartwegii (9 revisions)
- Hexastylis contracta (9 revisions)
- Pleopeltis (9 revisions)
- Pinus palustris (9 revisions)
- Eriogonum sphaerocephalum (9 revisions)
- Vittariaceae Illustrations (9 revisions)
- Andreaeaceae Illustrations (9 revisions)
- Echinocereus dasyacanthus (9 revisions)
- Molluginaceae (9 revisions)
- Tillandsia bartramii (9 revisions)
- Delphinium hesperium subsp. hesperium (9 revisions)
- Tsuga canadensis (9 revisions)
- Ranunculus occidentalis var. brevistylis (9 revisions)
- Calycanthus floridus var. floridus (9 revisions)
- Alnus serrulata (9 revisions)
- Ranunculus glaberrimus var. ellipticus (9 revisions)
- Pteris vittata (9 revisions)
- Asplenium adiantum-nigrum (9 revisions)
- Engelmannia (9 revisions)
- Basellaceae Illustrations (9 revisions)
- Echinocereus reichenbachii (9 revisions)
- Nyctaginia capitata (9 revisions)
- Selaginella willdenowii (9 revisions)
- Betula nigra (9 revisions)
- Ranunculus sect. Ranunculus (9 revisions)
- Notholaena californica subsp. californica (9 revisions)
- Pinus edulis (9 revisions)
- Cactaceae Illustrations (9 revisions)
- Pilosocereus (9 revisions)
- Abronia mellifera (9 revisions)
- Isopterygiopsis pulchella (9 revisions)
- Glaucium flavum (9 revisions)
- Juncus hallii (9 revisions)
- Ranunculus fasciculatus (9 revisions)
- Scorpidium cossonii (9 revisions)
- Corydalis scouleri (9 revisions)
- Urtica dioica subsp. dioica (9 revisions)
- Anemone okennonii (9 revisions)
- Polystichum setigerum (9 revisions)
- Pinus torreyana subsp. insularis (9 revisions)
- Oönopsis foliosa (9 revisions)
- Marsileaceae (9 revisions)
- Cleomaceae Illustrations (9 revisions)
- Echinocactus texensis (9 revisions)
- Abronia nana var. nana (9 revisions)
- Casuarina glauca (9 revisions)
- Pinus banksiana (9 revisions)
- Meconella californica (9 revisions)
- Quercus sadleriana (9 revisions)
- Ranunculus hispidus var. hispidus (9 revisions)
- Corylus avellana (9 revisions)
- Diplazium lonchophyllum (9 revisions)
- Cheiroglossa (9 revisions)
- Dennstaedtiaceae Illustrations (9 revisions)
- Sclerocactus whipplei (9 revisions)
- Guapira obtusata (9 revisions)
- Pseudolycopodiella (9 revisions)
- Argemone munita subsp. robusta (9 revisions)
- Ranunculus eschscholtzii var. suksdorfii (9 revisions)
- Juniperus communis var. megistocarpa (9 revisions)
- Thelypteris tetragona (9 revisions)
- Eriocaulaceae Illustrations (9 revisions)
- Malpighiaceae (9 revisions)
- Glandulicactus (9 revisions)
- Trianthema (9 revisions)
- Quercus texana (9 revisions)
- Juncus articulatus (9 revisions)
- Calocedrus (9 revisions)
- Trautvetteria (9 revisions)
- Aquilegia eximia (9 revisions)
- Dicentra formosa subsp. oregana (9 revisions)
- Clematis crispa (9 revisions)
- Botrychium mormo (9 revisions)
- Brassicaceae tribe Chorisporeae (9 revisions)
- Laënnecia turnerorum (9 revisions)
- Abies procera (9 revisions)
- Hamamelidaceae Illustrations (9 revisions)
- Pediocactus nigrispinus (9 revisions)
- Delosperma litorale (9 revisions)
- Drosanthemum (9 revisions)
- Nymphaea ampla (9 revisions)
- Pinus elliottii var. elliottii (9 revisions)
- Ceratophyllum echinatum (9 revisions)
- Asarum wagneri (9 revisions)
- Ranunculus flammula var. flammula (9 revisions)
- Asplenium verecundum (9 revisions)
- Pteridium aquilinum var. pseudocaudatum (9 revisions)
- Chrysothamnus scopulorum (9 revisions)
- Asplenium dalhousiae (9 revisions)
- Juncaginaceae Illustrations (9 revisions)
- Coryphantha robustispina (9 revisions)
- Gisekia pharnacioides (9 revisions)
- Fagus grandifolia (9 revisions)
- Ophioglossum nudicaule (9 revisions)
- Grimmiaceae subfam. Grimmioideae (9 revisions)
- Ivesia sect. Unguiculatae (9 revisions)
- Aquilegia coerulea var. coerulea (9 revisions)
- Achlys (9 revisions)
- Palhinhaea cernua (9 revisions)
- Aspidotis carlotta-halliae (9 revisions)
- Solidago multiradiata (9 revisions)
- Taxus (9 revisions)
- Lygodiaceae Illustrations (9 revisions)
- Coryphantha vivipara (9 revisions)
- Polycarpon tetraphyllum (9 revisions)
- Allium schoenoprasum (9 revisions)
- Cylindropuntia imbricata var. argentea (9 revisions)
- Cypripedium parviflorum var. pubescens (9 revisions)
- Phegopteris hexagonoptera (9 revisions)
- Salix ×smithiana (9 revisions)
- Laënnecia coulteri (9 revisions)
- Quercus oglethorpensis (9 revisions)
- Urtica chamaedryoides (9 revisions)
- Aquilegia micrantha (9 revisions)
- Boehmeria cylindrica (9 revisions)
- Myricaceae Illustrations (9 revisions)
- Ferocactus wislizeni (9 revisions)
- Grusonia (9 revisions)
- Ulmus crassifolia (9 revisions)
- Berberis wilcoxii (9 revisions)
- Crataegus ×collicola (9 revisions)
- Iris (sect. Limniris) ser. Tripetalae (9 revisions)
- Ranunculus hydrocharoides (9 revisions)
- Thalictrum (9 revisions)
- Delphinium hesperium subsp. pallescens (9 revisions)
- Pinus muricata (9 revisions)
- Pinus elliottii var. densa (9 revisions)
- Parkeriaceae Illustrations (9 revisions)
- Prosartes maculata (9 revisions)
- Opuntia humifusa var. humifusa (9 revisions)
- Cabombaceae (9 revisions)
- Crataegus ×vailiae (9 revisions)
- Campyloneurum phyllitidis (9 revisions)
- Fothergilla (9 revisions)
- Cabomba caroliniana (9 revisions)
- Ranunculus arvensis (9 revisions)
- Dendromecon (9 revisions)
- Chionophila jamesii (9 revisions)
- Pellaea ovata (9 revisions)
- Maxonia (9 revisions)
- Polytrichaceae Illustrations (9 revisions)
- Opuntia chisosensis (9 revisions)
- Zamiaceae (9 revisions)
- Phemeranthus validulus (9 revisions)
- Soleirolia (9 revisions)
- Aristolochiaceae (9 revisions)
- Dryopteris cinnamomea (9 revisions)
- Rhizogoniaceae Illustrations (9 revisions)
- Opuntia ellisiana (9 revisions)
- Malus (9 revisions)
- Ranunculus flabellaris (9 revisions)
- Blechnaceae (9 revisions)
- Clematis vitalba (9 revisions)
- Ranunculus sect. Arcteranthis (9 revisions)
- Aquilegia formosa var. hypolasia (9 revisions)
- Collinsia heterophylla (9 revisions)
- Ephedra aspera (9 revisions)
- Argyrochosma jonesii (9 revisions)
- Rhynchospora megaplumosa (9 revisions)
- Scouleriaceae Illustrations (9 revisions)
- Opuntia polyacantha var. hystricina (9 revisions)
- Quercus sinuata var. breviloba (9 revisions)
- Polypodiaceae (9 revisions)
- Maclura pomifera (9 revisions)
- Persea humilis (9 revisions)
- Notholaena greggii (9 revisions)
- Isoëtes georgiana (9 revisions)
- Taxaceae Illustrations (9 revisions)
- Peniocereus (9 revisions)
- Portulaca suffrutescens (9 revisions)
- Photinia villosa (9 revisions)
- Polytrichum commune var. perigoniale (9 revisions)
- Cochlospermaceae (9 revisions)
- Notholaena standleyi (9 revisions)
- Carpinus caroliniana subsp. caroliniana (9 revisions)
- Quercus gambelii (9 revisions)
- Papaver sect. Macrantha (9 revisions)
- Ephedra pedunculata (9 revisions)
- Ophioglossum pusillum (9 revisions)
- Xyridaceae Illustrations (9 revisions)
- Cucurbita melopepo var. ozarkana (9 revisions)
- Andreaeobryaceae Illustrations (9 revisions)
- Mollugo (9 revisions)
- Erigeron humilis (9 revisions)
- Taxodium distichum var. distichum (9 revisions)
- Nuphar ulvacea (9 revisions)
- Umbellularia (9 revisions)
- Chelidonium (9 revisions)
- Anemia (9 revisions)
- Ephedra nevadensis (9 revisions)
- Bataceae Illustrations (9 revisions)
- Boerhavia intermedia (9 revisions)
- Allionia (9 revisions)
- Equisetum hyemale subsp. affine (9 revisions)
- Canella winterana (9 revisions)
- Planera aquatica (9 revisions)
- Calliergonaceae Illustrations (9 revisions)
- Pilosocereus robinii (9 revisions)
- Abronia angustifolia (9 revisions)
- Cimicifuga arizonica (9 revisions)
- Juncus cooperi (9 revisions)
- Gymnocarpium (9 revisions)
- Nothocalaïs troximoides (9 revisions)
- Quercus depressipes (9 revisions)
- Quercus macrocarpa (9 revisions)
- Asarum (9 revisions)
- Papaver californicum (9 revisions)
- Zamia integrifolia (9 revisions)
- Thelypteris subg. Stegnogramma (9 revisions)
- Clethraceae Illustrations (9 revisions)
- Astrophytum (9 revisions)
- Abronia nana var. covillei (9 revisions)
- Quercus pungens (9 revisions)
- Hamamelis virginiana (9 revisions)
- Clematis subg. Clematis (9 revisions)
- Thelypteris pilosa var. alabamensis (9 revisions)
- Ephedra torreyana (9 revisions)
- Trichomanes membranaceum (9 revisions)
- Diapensiaceae Illustrations (9 revisions)
- Sclerocactus wrightiae (9 revisions)
- Aizoaceae (9 revisions)
- Magnolia (9 revisions)
- Spiraea ×hitchcockii (9 revisions)
- Juncus debilis (9 revisions)
- Botrychium sect. Hiemobotrychium (9 revisions)
- Peperomia humilis (9 revisions)
- Cimicifuga racemosa (9 revisions)
- Abies fraseri (9 revisions)
- Juniperus sect. Sabina (9 revisions)
- Lorandersonia (9 revisions)
- Cupressus macnabiana (9 revisions)
- Erpodiaceae Illustrations (9 revisions)
- Myrica inodora (9 revisions)
- Astrolepis sinuata subsp. sinuata (9 revisions)
- Aristolochia pentandra (9 revisions)
- Delphinium californicum subsp. californicum (9 revisions)
- Pinus torreyana subsp. torreyana (9 revisions)
- Acrostichum aureum (9 revisions)
- Selaginella eclipes (9 revisions)
- Hedwigiaceae Illustrations (9 revisions)
- Pediocactus simpsonii (9 revisions)
- Heliconiaceae Illustrations (9 revisions)
- Phyllanthus abnormis var. abnormis (9 revisions)
- Pediocactus knowltonii (9 revisions)
- Drosanthemum floribundum (9 revisions)
- Aconitum columbianum subsp. columbianum (9 revisions)
- Pinus pungens (9 revisions)
- Cocculus diversifolius (9 revisions)
- Stylophorum diphyllum (9 revisions)
- Pouzolzia (9 revisions)
- Larix lyallii (9 revisions)
- Chrysothamnus stylosus (9 revisions)
- Bommeria (9 revisions)
- Koeberliniaceae Illustrations (9 revisions)
- Coryphantha echinus (9 revisions)
- Clematis catesbyana (9 revisions)
- Pellaea andromedifolia (9 revisions)
- Carya ovata var. ovata (9 revisions)
- Ranunculus oresterus (9 revisions)
- Woodsia scopulina subsp. appalachiana (9 revisions)
- Scleranthus annuus (9 revisions)
- Pinus rigida (9 revisions)
- Magnoliaceae Illustrations (9 revisions)
- Stylomecon (9 revisions)
- Carex aquatilis var. minor (9 revisions)
- Asplenium cristatum (9 revisions)
- Salix humboldtiana (9 revisions)
- Aristolochia macrophylla (9 revisions)
- Betula pendula (9 revisions)
- Deeringothamnus pulchellus (9 revisions)
- Podophyllum (9 revisions)
- Selaginella lepidophylla (9 revisions)
- Cheilanthes clevelandii (9 revisions)
- Myriniaceae Illustrations (9 revisions)
- Ferocactus viridescens (9 revisions)
- Phaulothamnus spinescens (9 revisions)
- Carex media (9 revisions)
- Persea (9 revisions)
- Crataegus ×disperma (9 revisions)
- Thalictrum occidentale (9 revisions)
- Corydalis caseana subsp. cusickii (9 revisions)
- Hippuris (9 revisions)
- Juniperus scopulorum (9 revisions)
- Selaginella eremophila (9 revisions)
- Botrychium pumicola (9 revisions)
- Passifloraceae Illustrations (9 revisions)
- Opuntia humifusa var. ammophila (9 revisions)
- Berberis pinnata subsp. insularis (9 revisions)
- Cupressus sargentii (9 revisions)
- Delphinium alpestre (9 revisions)
- Saururus (9 revisions)
- Ceratophyllum demersum (9 revisions)
- Notholaena californica subsp. leucophylla (9 revisions)
- Thelypteris subg. Lastrea (9 revisions)
- Pontederiaceae Illustrations (9 revisions)
- Opuntia atrispina (9 revisions)
- Atriplex sect. Spongiocarpus (9 revisions)
- Cystopteris tenuis (9 revisions)
- Mirabilis linearis var. linearis (9 revisions)
- Ranunculus muricatus (9 revisions)
- Lardizabalaceae (9 revisions)
- Quercus robur (9 revisions)
- Collinsia sparsiflora var. sparsiflora (9 revisions)
- Abies concolor (9 revisions)
- Cheilanthes eatonii (9 revisions)
- Rhytidiaceae Illustrations (9 revisions)
- Opuntia aureispina (9 revisions)
- Delphinium parishii subsp. parishii (9 revisions)
- Carex heleonastes (9 revisions)
- Nelumbo lutea (9 revisions)
- Quercus oblongifolia (9 revisions)
- Delphinium patens subsp. hepaticoideum (9 revisions)
- Isoëtes louisianensis (9 revisions)
- Botrychium campestre (9 revisions)
- Eriogonum pharnaceoides (9 revisions)
- Selaginellaceae Illustrations (9 revisions)
- Opuntia polyacantha var. erinacea (9 revisions)
- Brasenia (9 revisions)
- Lycopodiella alopecuroides (9 revisions)
- Nuphar microphylla (9 revisions)
- Leitneria floridana (9 revisions)
- Argemone (9 revisions)
- Thelypteris ovata var. ovata (9 revisions)
- Tetraphidaceae Illustrations (9 revisions)
- Mirabilis linearis var. decipiens (9 revisions)
- Corydalis (9 revisions)
- Thelypteris dentata (9 revisions)
- Comptonia peregrina (9 revisions)
- Myrica pensylvanica (9 revisions)
- Quercus chapmanii (9 revisions)
- Isoëtes prototypus (9 revisions)
- Ophioglossum petiolatum (9 revisions)
- Zamiaceae Illustrations (9 revisions)
- Anemiaceae Illustrations (9 revisions)
- Echinocereus bonkerae (9 revisions)
- Mollugo verticillata (9 revisions)
- Romneya coulteri (9 revisions)
- Delphinium menziesii subsp. pallidum (9 revisions)
- Myurella sibirica (9 revisions)
- Ranunculus canus var. canus (9 revisions)
- Nymphaea elegans (9 revisions)
- Cheilanthes lanosa (9 revisions)
- Cheilanthes tomentosa (9 revisions)
- Begoniaceae Illustrations (9 revisions)
- Echinocereus pseudopectinatus (9 revisions)
- Quercus arizonica (9 revisions)
- Campyloneurum costatum (9 revisions)
- Ranunculus glacialis var. camissonis (9 revisions)
- Arctomecon humilis (9 revisions)
- Eschscholzia ramosa (9 revisions)
- Diphasiastrum tristachyum (9 revisions)
- Ephedra coryi (9 revisions)
- Eriogonum ochrocephalum (9 revisions)
- Calophyllaceae Illustrations (9 revisions)
- Bergerocactus (9 revisions)
- Abronia turbinata (9 revisions)
- Carex conoidea (9 revisions)
- Ranunculus alismifolius var. alismifolius (9 revisions)
- Selaginella leucobryoides (9 revisions)
- Argemone polyanthemos (9 revisions)
- Corydalis aurea subsp. aurea (9 revisions)
- Hamamelidaceae (9 revisions)
- Thuja plicata (9 revisions)
- Botrychium pallidum (9 revisions)
- Schizaea pusilla (9 revisions)
- Climaciaceae Illustrations (9 revisions)
- Boerhavia pterocarpa (9 revisions)
- Abronia bigelovii (9 revisions)
- Ulmus (9 revisions)
- Ranunculus ficaria (9 revisions)
- Ranunculus subg. Ceratocephala (9 revisions)
- Brosimum (9 revisions)
- Pinus sylvestris (9 revisions)
- Dicranaceae Illustrations (9 revisions)
- Sclerocactus glaucus (9 revisions)
- Tetragonia (9 revisions)
- Illiciaceae (9 revisions)
- Anemone piperi (9 revisions)
- Papaver rhoeas (9 revisions)
- Marsilea macropoda (9 revisions)
- Cystopteris laurentiana (9 revisions)
- Cyperus laevigatus (9 revisions)
- Lorandersonia baileyi (9 revisions)
- Fabroniaceae Illustrations (9 revisions)
- Glandulicactus uncinatus var. wrightii (9 revisions)
- Aptenia (9 revisions)
- Berberis aquifolium (9 revisions)
- Thelypteridaceae (9 revisions)
- Quercus montana (9 revisions)
- Papaver sect. Meconella (9 revisions)
- Carpinus caroliniana subsp. virginiana (9 revisions)
- Anemone multifida var. multifida (9 revisions)
- Astrolepis windhamii (9 revisions)
- Tsuga heterophylla (9 revisions)
- Equisetum subg. Hippochaete (9 revisions)
- Huperzia occidentalis (9 revisions)
- Helodiaceae Illustrations (9 revisions)
- Pediocactus winkleri (9 revisions)
- Papaver orientale (9 revisions)
- Selaginella subg. Stachygynandrum (9 revisions)
- Anemone drummondii var. drummondii (9 revisions)
- Alnus rhombifolia (9 revisions)
- Betula kenaica (9 revisions)
- Delphinium californicum subsp. interius (9 revisions)
- Juniperus virginiana var. virginiana (9 revisions)
- Pellaea ternifolia subsp. arizonica (9 revisions)
- Lardizabalaceae Illustrations (9 revisions)
- Coryphantha sulcata (9 revisions)
- Cylindropuntia fulgida var. fulgida (9 revisions)
- Fumariaceae (9 revisions)
- Botrychium subg. Sceptridium (9 revisions)
- Parietaria pensylvanica (9 revisions)
- Ranunculus (9 revisions)
- Eschscholzia lemmonii subsp. lemmonii (9 revisions)
- Cheilanthes (9 revisions)
- Notholaena nealleyi (9 revisions)
- Ophioglossum engelmannii (9 revisions)
- Eriogonum strictum (9 revisions)
- Malvaceae Illustrations (9 revisions)
- Neolloydia (9 revisions)
- Cylindropuntia californica var. californica (9 revisions)
- Calopogon barbatus (9 revisions)
- Delphinium nuttallii (9 revisions)
- Blechnum (9 revisions)
- Dorstenia (9 revisions)
- Anemone multiceps (9 revisions)
- Aristolochia reticulata (9 revisions)
- Adiantum (9 revisions)
- Hypolepis repens (9 revisions)
- Polypodium californicum (9 revisions)
- Myrsinaceae Illustrations (9 revisions)
- Ferocactus viridescens var. viridescens (9 revisions)
- Grusonia aggeria (9 revisions)
- Nymphaea jamesoniana (9 revisions)
- Crataegus ×dispessa (9 revisions)
- Ranunculus alismifolius var. alismellus (9 revisions)
- Ranunculus marginatus (9 revisions)
- Ranunculus orthorhynchus var. bloomeri (9 revisions)
- Hippuris montana (9 revisions)
- Pellaea (9 revisions)
- Weissia phascopsis (9 revisions)
- Isoëtes nuttallii (9 revisions)
- Thelypteris noveboracensis (9 revisions)
- Eriogonum longifolium (9 revisions)
- Penthoraceae Illustrations (9 revisions)
- Opuntia macrorhiza (9 revisions)
- Quercus garryana var. breweri (9 revisions)
- Selaginella ×neomexicana (9 revisions)
- Hamamelis vernalis (9 revisions)
- Clematis occidentalis var. grosseserrata (9 revisions)
- Chionophila tweedyi (9 revisions)
- Selaginella arizonica (9 revisions)
- Lygodium palmatum (9 revisions)
- Portulacaceae Illustrations (9 revisions)
- Boerhavia diffusa (9 revisions)
- Quercus margarettae (9 revisions)
- Pleopeltis riograndensis (9 revisions)
- Portulaca (9 revisions)
- Delphinium gypsophilum subsp. parviflorum (9 revisions)
- Diphylleia (9 revisions)
- Stylophorum (9 revisions)
- Collinsia sparsiflora var. collina (9 revisions)
- Thelypteris subg. Goniopteris (9 revisions)
- Dicranopteris (9 revisions)
- Roellobryaceae Illustrations (9 revisions)
- Stipulicida setacea (9 revisions)
- Mirabilis sect. Oxybaphoides (9 revisions)
- Dicentra uniflora (9 revisions)
- Schizaeaceae (9 revisions)
- Quercus engelmannii (9 revisions)
- Berberis amplectens (9 revisions)
- Papaver somniferum (9 revisions)
- Juncus dubius (9 revisions)
- Abies grandis (9 revisions)
- Seligeriaceae Illustrations (9 revisions)
- Nopalea (9 revisions)
- Argemone hispida (9 revisions)
- Argyrochosma limitanea subsp. limitanea (9 revisions)
- Ranunculus platensis (9 revisions)
- Delphinium subsect. Echinata (9 revisions)
- Delphinium madrense (9 revisions)
- Quercus chihuahuensis (9 revisions)
- Tradescantia wrightii (9 revisions)
- Pleopeltis polylepis var. erythrolepis (9 revisions)
- Bommeria hispida (9 revisions)
- Theaceae Illustrations (9 revisions)
- Peniocereus greggii var. greggii (9 revisions)
- Juncus chlorocephalus (9 revisions)
- Pilea fontana (9 revisions)
- Gymnocarpium appalachianum (9 revisions)
- Anemone canadensis (9 revisions)
- Berberidaceae (9 revisions)
- Enemion stipitatum (9 revisions)
- Clematis orientalis (9 revisions)
- Selaginella scopulorum (9 revisions)
- Zannichelliaceae Illustrations (9 revisions)
- Annonaceae Illustrations (9 revisions)
- Echinocereus fasciculatus (9 revisions)
- Mollugo cerviana (9 revisions)
- Carex cumberlandensis (9 revisions)
- Hesperocnide tenella (9 revisions)
- Ranunculus uncinatus (9 revisions)
- Enemion biternatum (9 revisions)
- Xanthorhiza simplicissima (9 revisions)
- Dennstaedtia bipinnata (9 revisions)
- Equisetum ramosissimum subsp. ramosissimum (9 revisions)
- Stellaria borealis subsp. borealis (9 revisions)
- Eriogonum jamesii (9 revisions)
- Eriogonum rosense (9 revisions)
- Berberidaceae Illustrations (9 revisions)
- Allionia incarnata var. incarnata (9 revisions)
- Cassytha (9 revisions)
- Ceratopteris thalictroides (9 revisions)
- Clematis tangutica var. tangutica (9 revisions)
- Ranunculus hystriculus (9 revisions)
- Hesperomecon linearis (9 revisions)
- Polystichum imbricans subsp. curtum (9 revisions)
- Calycanthaceae Illustrations (9 revisions)
- Bergerocactus emoryi (9 revisions)
- Phytolacca icosandra (9 revisions)
- Pouzolzia zeylanica (9 revisions)
- Polystichum scopulinum (9 revisions)
- Potentilla sect. Niveae (9 revisions)
- Aconitum delphiniifolium (9 revisions)
- Delphinium parryi (9 revisions)
- Calycanthus floridus var. glaucus (9 revisions)
- Calycanthaceae (9 revisions)
- Selaginella rupincola (9 revisions)
- Cystopteris reevesiana (9 revisions)
- Selaginella utahensis (9 revisions)
- Eriogonum wrightii (9 revisions)
- Clusiaceae Illustrations (9 revisions)
- Astrophytum asterias (9 revisions)
- Abronia alpina (9 revisions)
- Argemone pleiacantha subsp. pleiacantha (9 revisions)
- Brachythecium erythrorrhizon (9 revisions)
- Pellaea glabella subsp. glabella (9 revisions)
- Dicentra ochroleuca (9 revisions)
- Lithocarpus densiflorus var. echinoides (9 revisions)
- Ranunculus cardiophyllus (9 revisions)
- Parietaria hespera var. hespera (9 revisions)
- Thelypteris ovata var. lindheimeri (9 revisions)
- Nephrolepis cordifolia (9 revisions)
- Pteris multifida (9 revisions)
- Dioscoreaceae Illustrations (9 revisions)
- Sclerocactus brevispinus (9 revisions)
- Tetragonia tetragonioides (9 revisions)
- Erigeron strigosus var. septentrionalis (9 revisions)
- Urtica gracilenta (9 revisions)
- Argyrochosma incana (9 revisions)
- Carya cordiformis (9 revisions)
- Quercus emoryi (9 revisions)
- Aquilegia flavescens (9 revisions)
- Botrychium pseudopinnatum (9 revisions)
- Lorandersonia linifolia (9 revisions)
- Asplenium rhizophyllum (9 revisions)
- Fagaceae Illustrations (9 revisions)
- Boerhavia spicata (9 revisions)
- Aptenia cordifolia (9 revisions)
- Corylus cornuta subsp. californica (9 revisions)
- Petrophytum caespitosum subsp. acuminatum (9 revisions)
- Agave americana (9 revisions)
- Quercus robusta (9 revisions)
- Clematis albicoma (9 revisions)
- Ostrya knowltonii (9 revisions)
- Botrychium lanceolatum subsp. angustisegmentum (9 revisions)
- Asplenium adulterinum (9 revisions)
- Hookeriaceae Illustrations (9 revisions)
- Pediocactus despainii (9 revisions)
- Cactaceae subfam. Pereskioideae (9 revisions)
- Equisetum telmateia subsp. braunii (9 revisions)
- Agave parryi var. parryi (9 revisions)
- Anemone grayi (9 revisions)
- Delphinium basalticum (9 revisions)
- Delphinium decorum subsp. decorum (9 revisions)
- Juglandaceae (9 revisions)
- Astrolepis integerrima (9 revisions)
- Lauraceae Illustrations (9 revisions)
- Coryphantha tuberculosa (9 revisions)
- Cylindropuntia fulgida var. mamillata (9 revisions)
- Delphinium hansenii subsp. kernense (9 revisions)
- Sequoiadendron (9 revisions)
- Casuarinaceae (9 revisions)
- Ranunculus austro-oreganus (9 revisions)
- Ulmus procera (9 revisions)
- Eschscholzia glyptosperma (9 revisions)
- Woodsia plummerae (9 revisions)
- Astrolepis cochisensis subsp. cochisensis (9 revisions)
- Scleranthus perennis (9 revisions)
- Polystichum munitum (9 revisions)
- Marantaceae Illustrations (9 revisions)
- Neolloydia conoidea (9 revisions)
- Cylindropuntia californica var. parkeri (9 revisions)
- Quercus stellata (9 revisions)
- Matteuccia (9 revisions)
- Rudbeckia klamathensis (9 revisions)
- Quercus minima (9 revisions)
- Delphinium sapellonis (9 revisions)
- Delphinium sect. Elatopsis (9 revisions)
- Tradescantia subacaulis (9 revisions)
- Callitriche brutia var. hamulata (9 revisions)
- Cheilanthes feei (9 revisions)
- Luzula subg. Anthelaea (9 revisions)
- Sequoia (9 revisions)
- Najadaceae Illustrations (9 revisions)
- Grusonia grahamii (9 revisions)
- Delphinium recurvatum (9 revisions)
- Crataegus ×fretalis (9 revisions)
- Argemone albiflora subsp. albiflora (9 revisions)
- Trollius riederianus (9 revisions)
- Delphinium polycladon (9 revisions)
- Dicentra (9 revisions)
- Cryptogramma cascadensis (9 revisions)
- Weissia ludoviciana (9 revisions)
- Isoëtes virginica (9 revisions)
- Adiantum capillus-veneris (9 revisions)
- Phytolaccaceae Illustrations (9 revisions)
- Opuntia pottsii (9 revisions)
- Thalictrum confine (9 revisions)
- Delphinium trolliifolium (9 revisions)
- Argemone pleiacantha subsp. pinnatisecta (9 revisions)
- Celtis (9 revisions)
- Delphinium patens subsp. montanum (9 revisions)
- Collinsia (9 revisions)
- Pinus lambertiana (9 revisions)
- Pellaea ternifolia subsp. villosa (9 revisions)
- Potamogetonaceae Illustrations (9 revisions)
- Opuntia santa-rita (9 revisions)
- Isoëtes melanospora (9 revisions)
- Iris (sect. Limniris) ser. Spuriae (9 revisions)
- Portulaca amilis (9 revisions)
- Nymphaea tetragona (9 revisions)
- Menispermum (9 revisions)
- Papaver pygmaeum (9 revisions)
- Sagittaria montevidensis subsp. calycina (9 revisions)
- Athyrium filix-femina var. asplenioides (9 revisions)
- Eriogonum nutans (9 revisions)
- Rumex sect. Rumex (9 revisions)
- Rosaceae Illustrations (9 revisions)
- Tamarix (9 revisions)
- Opuntia basilaris var. basilaris (9 revisions)
- Draba fladnizensis (9 revisions)
- Ranunculus occidentalis var. dissectus (9 revisions)
- Torreya (9 revisions)
- Ranunculus sect. Hecatonia (9 revisions)
- Quercus shumardii (9 revisions)
- Delphinium glareosum (9 revisions)
- Adiantum aleuticum (9 revisions)
- Sematophyllaceae Illustrations (9 revisions)
- Boerhavia anisophylla (9 revisions)
- Arctomecon merriamii (9 revisions)
- Ginkgo (9 revisions)
- Cimicifuga elata (9 revisions)
- Peperomia amplexicaulis (9 revisions)
- Hesperocnide (9 revisions)
- Lithocarpus densiflorus var. densiflorus (9 revisions)
- Equisetum ×mackaii (9 revisions)
- Chamaecyparis (9 revisions)
- Solidago subsect. Venosae (9 revisions)
- Theliaceae Illustrations (9 revisions)
- Peniocereus greggii var. transmontanus (9 revisions)
- Elatine (9 revisions)
- Portulaca umbraticola subsp. coronata (9 revisions)
- Consolida tenuissima (9 revisions)
- Thelypteris subg. Meniscium (9 revisions)
- Sansevieria hyacinthoides (9 revisions)
- Coptis occidentalis (9 revisions)
- Aquilegia coerulea var. alpina (9 revisions)
- Matteuccia struthiopteris var. pensylvanica (9 revisions)
- Sparganium hyperboreum (9 revisions)
- Asplenium bradleyi (9 revisions)
- Zingiberaceae Illustrations (9 revisions)
- Anomodontaceae Illustrations (9 revisions)
- Echinocereus engelmannii (9 revisions)
- Glinus (9 revisions)
- Delphinium xantholeucum (9 revisions)
- Pentagramma triangularis subsp. maxonii (9 revisions)
- Argemone aurantiaca (9 revisions)
- Annonaceae (9 revisions)
- Quercus mohriana (9 revisions)
- Castanea dentata (9 revisions)
- Neurodium (9 revisions)
- Betulaceae Illustrations (9 revisions)
- Echinocereus rigidissimus var. rigidissimus (9 revisions)
- Allionia incarnata var. villosa (9 revisions)
- Ulmus serotina (9 revisions)
- Campyloneurum angustifolium (9 revisions)
- Quercus bicolor (9 revisions)
- Cannabis sativa (9 revisions)
- Diphasiastrum digitatum (9 revisions)
- Selaginella arenicola subsp. riddellii (9 revisions)
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- Pachycereus (9 revisions)
- Abronia pogonantha (9 revisions)
- Isopterygium tenerum (9 revisions)
- Cimicifuga americana (9 revisions)
- Cryptogramma sitchensis (9 revisions)
- Delphinium sutherlandii (9 revisions)
- Fatoua villosa (9 revisions)
- Brosimum alicastrum (9 revisions)
- Piper auritum (9 revisions)
- Cheilanthes yavapensis (9 revisions)
- Marsilea mollis (9 revisions)
- Campyloneurum latum (9 revisions)
- Cochlospermaceae Illustrations (9 revisions)
- Echinomastus (9 revisions)
- Tripterocalyx (9 revisions)
- Ranunculus adoneus (9 revisions)
- Abies lasiocarpa (9 revisions)
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- Ranunculus laxicaulis (9 revisions)
- Licaria (9 revisions)
- Trichomanes krausii (9 revisions)
- Thelypteris sclerophylla (9 revisions)
- Diphysciaceae Illustrations (9 revisions)
- Sclerocactus wetlandicus (9 revisions)
- Rivina humilis (9 revisions)
- Erigeron strigosus var. strigosus (9 revisions)
- Achlys californica (9 revisions)
- Ptychosperma (9 revisions)
- Quercus viminea (9 revisions)
- Ranunculus lobbii (9 revisions)
- Nandina (9 revisions)
- Myrica heterophylla (9 revisions)
- Dryopteris filix-mas (9 revisions)
- Phlegmariurus dichotomus (9 revisions)
- Laënnecia sophiifolia (9 revisions)
- Hypolepis (9 revisions)
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- Ancistrocactus (9 revisions)
- Mesembryanthemum (9 revisions)
- Selaginella subg. Selaginella (9 revisions)
- Thalictrum macrostylum (9 revisions)
- Anemone caroliniana (9 revisions)
- Hexastylis shuttleworthii var. shuttleworthii (9 revisions)
- Berberis pinnata subsp. pinnata (9 revisions)
- Isoëtes acadiensis (9 revisions)
- Dennstaedtiaceae (9 revisions)
- Hydrocharitaceae Illustrations (9 revisions)
- Thelocactus (9 revisions)
- Gisekia (9 revisions)
- Quercus gravesii (9 revisions)
- Polystichum imbricans subsp. imbricans (9 revisions)
- Agave parryi var. huachucensis (9 revisions)
- Delphinium hansenii (9 revisions)
- Ranunculus orthorhynchus var. platyphyllus (9 revisions)
- Carya aquatica (9 revisions)
- Papaveraceae (9 revisions)
- Cupressus (9 revisions)
- Azolla filiculoides (9 revisions)
- Leitneriaceae Illustrations (9 revisions)
- Boerhavia coulteri var. coulteri (9 revisions)
- Cylindropuntia ×kelvinensis (9 revisions)
- Ranunculus micranthus (9 revisions)
- Polystichum microchlamys (9 revisions)
- Delphinium andesicola (9 revisions)
- Anemone edwardsiana var. petraea (9 revisions)
- Thalictrum debile (9 revisions)
- Thelypteris subg. Thelypteris (9 revisions)
- Ephedra trifurca (9 revisions)
- Marsileaceae Illustrations (9 revisions)
- Neolloydia conoidea var. conoidea (9 revisions)
- Cylindropuntia abyssi (9 revisions)
- Illicium floridanum (9 revisions)
- Juniperus ashei (9 revisions)
- Aristolochia watsonii (9 revisions)
- Aconitum reclinatum (9 revisions)
- Quercus michauxii (9 revisions)
- Parietaria (9 revisions)
- Huperzia miyoshiana (9 revisions)
- Neckeraceae Illustrations (9 revisions)
- Grusonia emoryi (9 revisions)
- Chrysolepis chrysophylla var. minor (9 revisions)
- Crataegus ×incaedua (9 revisions)
- Akebia (9 revisions)
- Eranthis hyemalis (9 revisions)
- Eschscholzia parishii (9 revisions)
- Ranunculus californicus var. californicus (9 revisions)
- Trichomanes lineolatum (9 revisions)
- Phlebodium aureum (9 revisions)
- Picramniaceae Illustrations (9 revisions)
- Opuntia tortispina (9 revisions)
- Cotoneaster ×suecicus (9 revisions)
- Macleaya (9 revisions)
- Lygodium microphyllum (9 revisions)
- Rhododendron columbianum (9 revisions)
- Iris (sect. Limniris) ser. Longipetalae (9 revisions)
- Phytolaccaceae (9 revisions)
- Ranunculus alismifolius var. davisii (9 revisions)
- Aristolochia erecta (9 revisions)
- Laportea canadensis (9 revisions)
- Collinsia verna (9 revisions)
- Notholaena neglecta (9 revisions)
- Polypodium glycyrrhiza (9 revisions)
- Pottiaceae Illustrations (9 revisions)
- Phoradendron (9 revisions)
- Opuntia macrocentra (9 revisions)
- Nectandra coriacea (9 revisions)
- Carex incurviformis (9 revisions)
- Pteris tripartita (9 revisions)
- Portulaca biloba (9 revisions)
- Delphinium (9 revisions)
- Anemone americana (9 revisions)
- Quercus imbricaria (9 revisions)
- Collinsia wrightii (9 revisions)
- Cystopteris utahensis (9 revisions)
- Eriocaulon koernickianum (9 revisions)
- Rumex hymenosepalus (9 revisions)
- Ruppiaceae Illustrations (9 revisions)
- Opuntia basilaris var. treleasei (9 revisions)
- Draba glabella (9 revisions)
- Berberis trifoliolata (9 revisions)
- Grimmia ramondii (9 revisions)
- Polystichum acrostichoides (9 revisions)
- Berberis haematocarpa (9 revisions)
- Ostrya chisosensis (9 revisions)
- Betula pubescens subsp. pubescens (9 revisions)
- Collinsia concolor (9 revisions)
- Eriogonum spergulinum (9 revisions)
- Smilacaceae Illustrations (9 revisions)
- Nopalea cochenillifera (9 revisions)
- Acalypha (9 revisions)
- Quercus ajoensis (9 revisions)
- Selaginella hansenii (9 revisions)
- Hesperomecon (9 revisions)
- Delphinium robustum (9 revisions)
- Asimina reticulata (9 revisions)
- Keckiella lemmonii (9 revisions)
- Pseudotsuga menziesii var. glauca (9 revisions)
- Thelypteridaceae Illustrations (9 revisions)
- Peniocereus striatus (9 revisions)
- Portulaca umbraticola subsp. lanceolata (9 revisions)
- Ranunculus eschscholtzii var. trisectus (9 revisions)
- Ginkgo biloba (9 revisions)
- Calycocarpum (9 revisions)
- Vancouveria planipetala (9 revisions)
- Dorstenia contrajerva (9 revisions)
- Chamaecyparis lawsoniana (9 revisions)
- Zosteraceae Illustrations (9 revisions)
- Apodanthaceae Illustrations (9 revisions)
- Arceuthobium campylopodum subsp. monticola (9 revisions)
- Echinocereus nicholii (9 revisions)
- Glinus radiatus (9 revisions)
- Delphinium variegatum subsp. kinkiense (9 revisions)
- Cheilanthes covillei (9 revisions)
- Cocculus (9 revisions)
- Aquilegia canadensis (9 revisions)
- Juncus dichotomus (9 revisions)
- Asplenium ebenoides (9 revisions)
- Blechnaceae Illustrations (9 revisions)
- Echinocereus poselgeri (9 revisions)
- Allionia choisyi (9 revisions)
- Trematodon (9 revisions)
- Enemion savilei (9 revisions)
- Polypodium triseriale (9 revisions)
- Potentilla sect. Aureae (9 revisions)
- Dicentra pauciflora (9 revisions)
- Alnus incana subsp. tenuifolia (9 revisions)
- Nymphaea (9 revisions)
- Abies bifolia (9 revisions)
- Pinus strobus (9 revisions)
- Canellaceae Illustrations (9 revisions)
- Pachycereus schottii (9 revisions)
- Delphinium parryi subsp. parryi (9 revisions)
- Grammitidaceae (9 revisions)
- Celtis lindheimeri (9 revisions)
- Delphinium nuttallianum (9 revisions)
- Delphinium umbraculorum (9 revisions)
- Selaginella apoda (9 revisions)
- Woodsia cochisensis (9 revisions)
- Ophioglossum vulgatum (9 revisions)
- Commelinaceae Illustrations (9 revisions)
- Echinomastus johnsonii (9 revisions)
- Tripterocalyx micranthus (9 revisions)
- Litsea aestivalis (9 revisions)
- Ephedraceae (9 revisions)
- Adonis (9 revisions)
- Delphinium nudicaule (9 revisions)
- Clematis morefieldii (9 revisions)
- Marsilea oligospora (9 revisions)
- Cheilanthes alabamensis (9 revisions)
- Asplenium ×biscayneanum (9 revisions)
- Disceliaceae Illustrations (9 revisions)
- Galenia (9 revisions)
- Papaver sect. Argemonidium (9 revisions)
- Pinus longaeva (9 revisions)
- Persea borbonia (9 revisions)
- Argemone squarrosa subsp. squarrosa (9 revisions)
- Delphinium carolinianum subsp. carolinianum (9 revisions)
- Trollius (9 revisions)
- Pinus aristata (9 revisions)
- Taxodium (9 revisions)
- Lorandersonia microcephala (9 revisions)
- Lycopodiella appressa (9 revisions)
- Fontinalaceae Illustrations (9 revisions)
- Ancistrocactus brevihamatus (9 revisions)
- Mesembryanthemum crystallinum (9 revisions)
- Pellaea truncata (9 revisions)
- Chrysolepis chrysophylla var. chrysophylla (9 revisions)
- Delphinium uliginosum (9 revisions)
- Annona (9 revisions)
- Selaginella (9 revisions)
- Selaginella oregana (9 revisions)
- Eriophorum gracile (9 revisions)
- Asplenium trichomanes-ramosum (9 revisions)
- Hylocomiaceae Illustrations (9 revisions)
- Thelocactus bicolor (9 revisions)
- Pereskia (9 revisions)
- Parietaria praetermissa (9 revisions)
- Alisma (9 revisions)
- Thelypteris interrupta (9 revisions)
- Agave parryi var. couesii (9 revisions)
- Caulophyllum giganteum (9 revisions)
- Boehmeria (9 revisions)
- Quercus intricata (9 revisions)
- Adlumia (9 revisions)
- Notholaena aliena (9 revisions)
- Marsilea quadrifolia (9 revisions)
- Lembophyllaceae Illustrations (9 revisions)
- Coryphantha robertii (9 revisions)
- Cylindropuntia prolifera (9 revisions)
- Clematis subg. Viorna (9 revisions)
- Callitris (9 revisions)
- Meconella denticulata (9 revisions)
- Corydalis flavula (9 revisions)
- Aquilegia barnebyi (9 revisions)
- Quercus ellipsoidalis (9 revisions)
- Larix (9 revisions)
- Cystopteris tennesseensis (9 revisions)
- Equisetum pratense (9 revisions)
- Mayacaceae Illustrations (9 revisions)
- Epithelantha (9 revisions)
- Cylindropuntia munzii (9 revisions)
- Carex saxatilis (9 revisions)
- Ranunculus acriformis var. montanensis (9 revisions)
- Ulmus parvifolia (9 revisions)
- Betulaceae (9 revisions)
- Ulmus thomasii (9 revisions)
- Jeffersonia (9 revisions)
- Pteridium aquilinum var. pubescens (9 revisions)
- Cyrtomium fortunei var. fortunei (9 revisions)
- Nelumbonaceae Illustrations (9 revisions)
- Grusonia schottii (9 revisions)
- Jeffersonia diphylla (9 revisions)
- Crataegus ×kelloggii (9 revisions)
- Grimmia (9 revisions)
- Iris (sect. Limniris) ser. Sibirica (9 revisions)
- Clematis viticella (9 revisions)
- Achlys triphylla (9 revisions)
- Thalictrum coriaceum (9 revisions)
- Dicentra nevadensis (9 revisions)
- Deparia acrostichoides (9 revisions)
- Pinus contorta var. murrayana (9 revisions)
- Eriogonum esmeraldense (9 revisions)
- Selaginella eatonii (9 revisions)
- Paronychia fastigiata (9 revisions)
- Pilotrichaceae Illustrations (9 revisions)
- Mikania batatifolia (9 revisions)
- Opuntia stricta (9 revisions)
- Aponogetonaceae (9 revisions)
- Myosurus minimus (9 revisions)
- Selaginella douglasii (9 revisions)
- Phytolacca americana var. rigida (9 revisions)
- Trollius albiflorus (9 revisions)
- Clematis viorna (9 revisions)
- Ostrya (9 revisions)
- Juncus parryi (9 revisions)
- Collinsia violacea (9 revisions)
- Marsilea ancylopoda (9 revisions)
- Rhynchospora (9 revisions)
- Primulaceae Illustrations (9 revisions)
- Opuntia phaeacantha (9 revisions)
- Dicranella subulata (9 revisions)
- Campyloneurum (9 revisions)
- Iris (sect. Limniris) ser. Prisimaticae (9 revisions)
- Portulaca grandiflora (9 revisions)
- Betulaceae subfam. Coryloideae (9 revisions)
- Juncus subg. Septati (9 revisions)
- Collinsia torreyi (9 revisions)
- Diphasiastrum (9 revisions)
- Stuckenia striata (9 revisions)
- Rutenbergiaceae Illustrations (9 revisions)
- Opuntia basilaris var. longiareolata (9 revisions)
- Glaucium corniculatum (9 revisions)
- Pinus echinata (9 revisions)
- Sanguinaria canadensis (9 revisions)
- Ranunculus hebecarpus (9 revisions)
- Anemone quinquefolia var. minima (9 revisions)
- Keckiella (9 revisions)
- Ophioglossum (9 revisions)
- Abies magnifica (9 revisions)
- Sparganiaceae Illustrations (9 revisions)
- Consolea (9 revisions)
- Alnus oblongifolia (9 revisions)
- Asplenium vespertinum (9 revisions)
- Enemion (9 revisions)
- Myosurus sessilis (9 revisions)
- Rhinanthus minor subsp. minor (9 revisions)
- Dicentra eximia (9 revisions)
- Quercus virginiana (9 revisions)
- Tectaria coriandrifolia (9 revisions)
- Asplenium ×curtissii (9 revisions)
- Theophrastaceae Illustrations (9 revisions)
- Talinopsis (9 revisions)
- Dicentra canadensis (9 revisions)
- Juniperus deppeana var. deppeana (9 revisions)
- Delphinium nuttallii subsp. nuttallii (9 revisions)
- Ranunculus populago (9 revisions)
- Soleirolia soleirolii (9 revisions)
- Pinus ponderosa var. scopulorum (9 revisions)
- Huperzia lucidula (9 revisions)
- Eriogonum douglasii (9 revisions)
- Aponogetonaceae Illustrations (9 revisions)
- Boerhavia erecta (9 revisions)
- Glinus lotoides (9 revisions)
- Niphotrichum pygmaeum (9 revisions)
- Arachniodes simplicior (9 revisions)
- Celtis occidentalis (9 revisions)
- Quercus berberidifolia (9 revisions)
- Thalictrum polycarpum (9 revisions)
- Helleborus viridis (9 revisions)
- Cupressus bakeri (9 revisions)
- Thuja occidentalis (9 revisions)
- Brachytheciaceae Illustrations (9 revisions)
- Hylocereus (9 revisions)
- Abronia (9 revisions)
- Coptis laciniata (9 revisions)
- Adiantum pedatum (9 revisions)
- Quercus dumosa (9 revisions)
- Platanus racemosa (9 revisions)
- Corydalis caseana subsp. caseana (9 revisions)
- Trichomanes petersii (9 revisions)
- Cannabaceae Illustrations (9 revisions)
- Carnegiea (9 revisions)
- Abronia villosa var. villosa (9 revisions)
- Delphinium subsect. Subscaposa (9 revisions)
- Selaginella wallacei (9 revisions)
- Clematis columbiana var. columbiana (9 revisions)
- Berberis fendleri (9 revisions)
- Quercus pacifica (9 revisions)
- Castanea ozarkensis (9 revisions)
- Abies lowiana (9 revisions)
- Guzmania (9 revisions)
- Pteridium aquilinum var. latiusculum (9 revisions)
- Picea breweriana (9 revisions)
- Crassulaceae Illustrations (9 revisions)
- Echinomastus erectocentrus (9 revisions)
- Tripterocalyx carneus (9 revisions)
- Carya glabra (9 revisions)
- Cystopteris protrusa (9 revisions)
- Berberis harrisoniana (9 revisions)
- Adlumia fungosa (9 revisions)
- Chrysolepis (9 revisions)
- Lindera benzoin (9 revisions)
- Ctenitis sloanei (9 revisions)
- Notholaena aschenborniana (9 revisions)
- Lygodiaceae (9 revisions)
- Ditrichaceae Illustrations (9 revisions)
- Galenia pubescens (9 revisions)
- Spiraea ×pyramidata (9 revisions)
- Schoenoplectus acutus var. acutus (9 revisions)
- Dryopteris marginalis (9 revisions)
- Erythranthe suksdorfii (9 revisions)
- Berberis pinnata (9 revisions)
- Fumaria capreolata (9 revisions)
- Myrica californica (9 revisions)
- Carya illinoinensis (9 revisions)
- Anemia wrightii (9 revisions)
- Lorandersonia peirsonii (9 revisions)
- Nephrolepis biserrata (9 revisions)
- Mycelis (9 revisions)
- Frankeniaceae Illustrations (9 revisions)
- Ancistrocactus scheeri (9 revisions)
- Mesembryanthemum nodiflorum (9 revisions)
- Ficus benjamina (9 revisions)
- Carex subspathacea (9 revisions)
- Osmundaceae (9 revisions)
- Agave americana subsp. americana (9 revisions)
- Cissampelos (9 revisions)
- Umbellularia californica var. californica (9 revisions)
- Berberis vulgaris (9 revisions)
- Thalictrum thalictroides (9 revisions)
- Dicranopteris flexuosa (9 revisions)
- Juniperus pinchotii (9 revisions)
- Thelypteris nevadensis (9 revisions)
- Hymenophyllaceae Illustrations (9 revisions)
- Thelocactus bicolor var. bicolor (9 revisions)
- Pereskia aculeata (9 revisions)
- Cheilanthes villosa (9 revisions)
- Ranunculus triternatus (9 revisions)
- Fumaria officinalis (9 revisions)
- Corydalis curvisiliqua subsp. curvisiliqua (9 revisions)
- Aquilegia vulgaris (9 revisions)
- Vittaria graminifolia (9 revisions)
- Lemnaceae Illustrations (9 revisions)
- Coryphantha chaffeyi (9 revisions)
- Cylindropuntia versicolor (9 revisions)
- Cheilanthes fendleri (9 revisions)
- Ranunculus alismifolius var. hartwegii (9 revisions)
- Peperomia alata (9 revisions)
- Delphinium brachycentrum (9 revisions)
- Asplenium montanum (9 revisions)
- Pinus ponderosa var. arizonica (9 revisions)
- Equisetum subg. Equisetum (9 revisions)
- Meesiaceae Illustrations (9 revisions)
- Phaulothamnus (9 revisions)
- Clematis baldwinii (9 revisions)
- Nigella (9 revisions)
- Clematis drummondii (9 revisions)
- Ranunculus occidentalis var. ultramontanus (9 revisions)
- Vancouveria hexandra (9 revisions)
- Quercus pumila (9 revisions)
- Selaginella pilifera (9 revisions)
- Micranthes oregana (9 revisions)
- Chamaecyparis thyoides (9 revisions)
- Nyctaginaceae Illustrations (9 revisions)
- Grusonia kunzei (9 revisions)
- Aristolochia californica (9 revisions)
- Nuphar sagittifolia (9 revisions)
- Peperomia (9 revisions)
- Cheilanthes parryi (9 revisions)
- Notholaena copelandii (9 revisions)
- Ephedra californica (9 revisions)
- Pinaceae Illustrations (9 revisions)
- Opuntia chlorotica (9 revisions)
- Cabomba (9 revisions)
- Anemone occidentalis (9 revisions)
- Quercus douglasii (9 revisions)
- Collinsia grandiflora (9 revisions)
- Tectaria fimbriata (9 revisions)
- Sphagnum platyphyllum (9 revisions)
- Asplenium (9 revisions)
- Pseudoditrichaceae Illustrations (9 revisions)
- Opuntia ×curvispina (9 revisions)
- Mentzelia nuda (9 revisions)
- Juncus acuminatus (9 revisions)
- Celtis tenuifolia (9 revisions)
- Botrychium ascendens (9 revisions)
- Portulaca halimoides (9 revisions)
- Delphinium alabamicum (9 revisions)
- Ranunculus subg. Ranunculus (9 revisions)
- Eschscholzia lemmonii subsp. kernensis (9 revisions)
- Collinsia latifolia (9 revisions)
- Tsuga caroliniana (9 revisions)
- Salicaceae Illustrations (9 revisions)
- Eriogonum corymbosum var. glutinosum (9 revisions)
- Opuntia basilaris var. brachyclada (9 revisions)
- Pilea (9 revisions)
- Abies bracteata (9 revisions)
- Annona glabra (9 revisions)
- Quercus geminata (9 revisions)
- Urtica (9 revisions)
- Berberis (9 revisions)
- Adiantum tricholepis (9 revisions)
- Sagittaria platyphylla (9 revisions)
- Sphagnaceae Illustrations (9 revisions)
- Consolea corallicola (9 revisions)
- Ranunculus turneri (9 revisions)
- Pinus sylvestris var. sylvestris (9 revisions)
- Anemone narcissiflora var. monantha (9 revisions)
- Ranunculus allegheniensis (9 revisions)
- Eschscholzia hypecoides (9 revisions)
- Myosurus nitidus (9 revisions)
- Nothochelone (9 revisions)
- Woodsia scopulina subsp. laurentiana (9 revisions)
- Thuidiaceae Illustrations (9 revisions)
- Echinocereus enneacanthus (9 revisions)
- Talinopsis frutescens (9 revisions)
- Canbya candida (9 revisions)
- Grammitis nimbata (9 revisions)
- Clematis bigelovii (9 revisions)
- Anemone quinquefolia var. quinquefolia (9 revisions)
- Magnolia ashei (9 revisions)
- Thelypteris serrata (9 revisions)
- Cheilanthes pringlei (9 revisions)
- Araceae Illustrations (9 revisions)
- Echinocereus ledingii (9 revisions)
- Mirabilis rotundifolia (9 revisions)
- Quercus durata var. gabrielensis (9 revisions)
- Asplenium trichomanes-dentatum (9 revisions)
- Alnus maritima (9 revisions)
- Ostrya virginiana (9 revisions)
- Liriodendron tulipifera (9 revisions)
- Hexastylis arifolia var. ruthii (9 revisions)
- Pellaea brachyptera (9 revisions)
- Pellaea gastonyi (9 revisions)
- Eriogonum arcuatum (9 revisions)
- Brassicaceae Illustrations (9 revisions)
- Krameria (9 revisions)
- Hylocereus undatus (9 revisions)
- Abronia fragrans (9 revisions)
- Hypnum recurvatum (9 revisions)
- Betula populifolia (9 revisions)
- Hexastylis arifolia var. arifolia (9 revisions)
- Quercus nigra (9 revisions)
- Roemeria (9 revisions)
- Cyrtomium (9 revisions)
- Stellaria longipes subsp. longipes (9 revisions)
- Eriogonum pyrolifolium (9 revisions)
- Cannaceae Illustrations (9 revisions)
- Boerhavia megaptera (9 revisions)
- Abronia villosa var. aurita (9 revisions)
- Quercus similis (9 revisions)
- Polystichum dudleyi (9 revisions)
- Ulmaceae (9 revisions)
- Fothergilla gardenii (9 revisions)
- Carya floridana (9 revisions)
- Thelypteris reticulata (9 revisions)
- Blechnum serrulatum (9 revisions)
- Ceratopteris richardii (9 revisions)
- Crossosomataceae Illustrations (9 revisions)
- Echinomastus erectocentrus var. erectocentrus (9 revisions)
- Tripterocalyx wootonii (9 revisions)
- Delphinium parryi subsp. blochmaniae (9 revisions)
- Selaginella weatherbiana (9 revisions)
- Quercus laevis (9 revisions)
- Corydalis caseana subsp. hastata (9 revisions)
- Glaucium (9 revisions)
- Hymenophyllaceae (9 revisions)
- Cupressus guadalupensis var. forbesii (9 revisions)
- Larix occidentalis (9 revisions)
- Eriogonum zionis (9 revisions)
- Droseraceae Illustrations (9 revisions)
- Sclerocactus mesae-verdae (9 revisions)
- Pontederia cordata (9 revisions)
- Galenia secunda (9 revisions)
- Asimina incana (9 revisions)
- Juncus acutiflorus (9 revisions)
- Quercus carmenensis (9 revisions)
- Moraceae (9 revisions)
- Ranunculus occidentalis var. hexasepalus (9 revisions)
- Parietaria hespera var. californica (9 revisions)
- Isoëtes butleri (9 revisions)
- Minuartia obtusiloba (9 revisions)
- Lorandersonia pulchella (9 revisions)
- Astrolepis cochisensis subsp. chihuahuensis (9 revisions)
- Fumariaceae Illustrations (9 revisions)
- Pediocactus (9 revisions)
- Carpobrotus (9 revisions)
- Quercus chrysolepis (9 revisions)
- Botrychium crenulatum (9 revisions)
- Agave americana var. americana (9 revisions)
- Carya texana (9 revisions)
- Hexastylis arifolia var. callifolia (9 revisions)
- Quercus garryana var. semota (9 revisions)
- Thelypteris grandis var. grandis (9 revisions)
- Onoclea (9 revisions)
- Pinus taeda (9 revisions)
- Hypericaceae Illustrations (9 revisions)
- Thelocactus bicolor var. flavidispinus (9 revisions)
- Betula alleghaniensis (9 revisions)
- Isoëtes orcuttii (9 revisions)
- Botrychium subg. Botrychium (9 revisions)
- Leptodontaceae Illustrations (9 revisions)
- Coryphantha dasyacantha (9 revisions)
- Delphinium bicolor subsp. bicolor (9 revisions)
- Athyrium filix-femina var. cyclosorum (9 revisions)
- Licaria triandra (9 revisions)
- Anemone lancifolia (9 revisions)
- Eschscholzia californica subsp. mexicana (9 revisions)
- Hygroamblystegium varium var. varium (9 revisions)
- Calocedrus decurrens (9 revisions)
- Eriogonum atrorubens (9 revisions)
- Menispermaceae Illustrations (9 revisions)
- Epithelantha micromeris var. micromeris (9 revisions)
- Cylindropuntia ganderi (9 revisions)
- Ranunculus subg. Batrachium (9 revisions)
- Myricaceae (9 revisions)
- Fumaria vaillantii (9 revisions)
- Ranunculus jovis (9 revisions)
- Aquilegia scopulorum (9 revisions)
- Phanerophlebia (9 revisions)
- Cupressus macrocarpa (9 revisions)
- Parkeriaceae (9 revisions)
- Nymphaeaceae Illustrations (9 revisions)
- Pterostegia (9 revisions)
- Grusonia clavata (9 revisions)
- Delphinium bakeri (9 revisions)
- Grimmia plagiopodia (9 revisions)
- Iris (sect. Limniris) ser. Californicae (9 revisions)
- Mirabilis laevis var. villosa (9 revisions)
- Ranunculus glacialis var. glacialis (9 revisions)
- Elodium elodioides (9 revisions)
- Chelone (9 revisions)
- Ephedra cutleri (9 revisions)
- Piperaceae Illustrations (9 revisions)
- Boerhavia (9 revisions)
- Pedicularis oederi (9 revisions)
- Anemone narcissiflora var. villosissima (9 revisions)
- Andreaea rupestris (9 revisions)
- Salviniaceae (9 revisions)
- Iris (sect. Limniris) ser. Laevigatae (9 revisions)
- Phemeranthus longipes (9 revisions)
- Argemone corymbosa subsp. arenicola (9 revisions)
- Clematis subg. Viticella (9 revisions)
- Collinsia parviflora (9 revisions)
- Juniperus coahuilensis (9 revisions)
- Lycopodium (9 revisions)
- Psilotaceae Illustrations (9 revisions)
- Opuntia ×spinosibacca (9 revisions)
- Portulaca oleracea (9 revisions)
- Aristolochia wrightii (9 revisions)
- Meconella (9 revisions)
- Corydalis micrantha subsp. australis (9 revisions)
- Juncus secundus (9 revisions)
- Taxaceae (9 revisions)
- Pentagramma triangularis subsp. triangularis (9 revisions)
- Salviniaceae Illustrations (9 revisions)
- Opuntia aurea (9 revisions)
- Aquilegia chaplinei (9 revisions)
- Woodwardia virginica (9 revisions)
- Papaver (9 revisions)
- Berberis higginsiae (9 revisions)
- Argemone munita subsp. rotundata (9 revisions)
- Thelypteris puberula var. sonorensis (9 revisions)
- Pinus quadrifolia (9 revisions)
- Splachnaceae Illustrations (9 revisions)
- Eriogonum brevicaule (9 revisions)
- Cactaceae subfam. Cactoideae (9 revisions)
- Draba lactea (9 revisions)
- Anemone multifida var. saxicola (9 revisions)
- Pinus contorta var. contorta (9 revisions)
- Delphinium elatum (9 revisions)
- Schisandra glabra (9 revisions)
- Nothochelone nemorosa (9 revisions)
- Ctenitis (9 revisions)
- Thelypteris kunthii (9 revisions)
- Thymelaeaceae Illustrations (9 revisions)
- Achatocarpaceae Illustrations (9 revisions)
- Echinocereus enneacanthus var. enneacanthus (9 revisions)
- Talinum (9 revisions)
- Atriplex cordulata var. erecticaulis (9 revisions)
- Delphinium decorum (9 revisions)
- Thalictrum cooleyi (9 revisions)
- Morus (9 revisions)
- Delphinium geyeri (9 revisions)
- Pinus monophylla (9 revisions)
- Ophioglossum crotalophoroides (9 revisions)
- Archidiaceae Illustrations (9 revisions)
- Echinocereus triglochidiatus (9 revisions)
- Mirabilis gigantea (9 revisions)
- Dysphania subsect. Botrys (9 revisions)
- Ranunculus gelidus (9 revisions)
- Fagaceae (9 revisions)
- Casuarina (9 revisions)
- Clematis hirsutissima var. scottii (9 revisions)
- Asimina longifolia var. spatulata (9 revisions)
- Asplenium plenum (9 revisions)
- Solidago lepida subsp. lepida (9 revisions)
- Bromeliaceae Illustrations (9 revisions)
- Selenicereus (9 revisions)
- Phytolacca heterotepala (9 revisions)
- Aristolochia serpentaria (9 revisions)
- Thelypteris patens var. patens (9 revisions)
- Betula pubescens subsp. tortuosa (9 revisions)
- Selaginella watsonii (9 revisions)
- Cheilanthes kaulfussii (9 revisions)
- Oxytheca dendroidea (9 revisions)
- Capparaceae Illustrations (9 revisions)
- Carnegiea gigantea (9 revisions)
- Abronia ammophila (9 revisions)
- Clematis socialis (9 revisions)
- Isoëtes caroliniana (9 revisions)
- Quercus hemisphaerica (9 revisions)
- Carpinus (9 revisions)
- Magnolia macrophylla (9 revisions)
- Cryptogramma acrostichoides (9 revisions)
- Juniperus osteosperma (9 revisions)
- Cryphaeaceae Illustrations (9 revisions)
- Echinomastus erectocentrus var. acunensis (9 revisions)
- Tripterocalyx crux-maltae (9 revisions)
- Argemone chisosensis (9 revisions)
- Juncus triformis (9 revisions)
- Notholaena (9 revisions)
- Quercus ilicifolia (9 revisions)
- Clematis versicolor (9 revisions)
- Castanea (9 revisions)
- Carex timida (9 revisions)
- Arctomecon californica (9 revisions)
- Ctenitis submarginalis (9 revisions)
- Ephedra fasciculata (9 revisions)
- Dryopteridaceae Illustrations (9 revisions)
- Boerhavia purpurascens (9 revisions)
- Sesuvium (9 revisions)
- Berberis piperiana (9 revisions)
- Donrichardsia macroneuron (9 revisions)
- Lycopodiella prostrata (9 revisions)
- Pilea herniarioides (9 revisions)
- Quercus georgiana (9 revisions)
- Delphinium glaucescens (9 revisions)
- Ranunculus subg. Cyrtorhyncha (9 revisions)
- Pseudotsuga (9 revisions)
- Lorandersonia salicina (9 revisions)
- Funariaceae Illustrations (9 revisions)
- Pediocactus sileri (9 revisions)
- Carpobrotus chilensis (9 revisions)
- Bellis (9 revisions)
- Pecluma (9 revisions)
- Agave americana var. expansa (9 revisions)
- Corydalis caseana subsp. brachycarpa (9 revisions)
- Ranunculus sceleratus var. multifidus (9 revisions)
- Papaver nudicaule subsp. americanum (9 revisions)
- Aquilegia laramiensis (9 revisions)
- Delphinium menziesii subsp. menziesii (9 revisions)
- Pecluma ptilodon var. caespitosa (9 revisions)
- Pecluma plumula (9 revisions)
- Hypnaceae Illustrations (9 revisions)
- Hamatocactus (9 revisions)
- Pereskia grandifolia var. grandifolia (9 revisions)
- Ranunculus canus var. ludovicianus (9 revisions)
- Trichomanes punctatum subsp. floridanum (9 revisions)
- Humulus lupulus var. neomexicanus (9 revisions)
- Clematis ochroleuca (9 revisions)
- Ulmus rubra (9 revisions)
- Delphinium gypsophilum subsp. gypsophilum (9 revisions)
- Microgramma heterophylla (9 revisions)
- Deparia petersenii (9 revisions)
- Leskeaceae Illustrations (9 revisions)
- Coryphantha duncanii (9 revisions)
- Cylindropuntia bigelovii var. bigelovii (9 revisions)
- Nelumbo (9 revisions)
- Pinus balfouriana (9 revisions)
- Nuphar (9 revisions)
- Actaea pachypoda (9 revisions)
- Platanus occidentalis (9 revisions)
- Romneya (9 revisions)
- Odontosoria clavata (9 revisions)
- Pinus serotina (9 revisions)
- Pellaea cordifolia (9 revisions)
- Meteoriaceae Illustrations (9 revisions)
- Epithelantha bokei (9 revisions)
- Cylindropuntia echinocarpa (9 revisions)
- Ranunculus macounii (9 revisions)
- Platanus wrightii (9 revisions)
- Crataegus (sect. Unassigned) ser. Montaninsulae (9 revisions)
- Quercus (9 revisions)
- Argemone munita subsp. munita (9 revisions)
- Delphinium wootonii (9 revisions)
- Asimina tetramera (9 revisions)
- Cheiroglossa palmata (9 revisions)
- Acrostichum danaeifolium (9 revisions)
- Polystichum californicum (9 revisions)
- Oedipodiaceae Illustrations (9 revisions)
- Lechea san-sabeana (9 revisions)
- Grusonia parishii (9 revisions)
- Draba alpina (9 revisions)
- Ranunculus subg. Pallasiantha (9 revisions)
- Crataegus ×latebrosa (9 revisions)
- Grimmia anodon (9 revisions)
- Delphinium scaposum (9 revisions)
- Clematis pitcheri var. pitcheri (9 revisions)
- Carya ovata var. australis (9 revisions)
- Pilea microphylla (9 revisions)
- Chelone cuthbertii (9 revisions)
- Woodwardia (9 revisions)
- Juniperus virginiana var. silicicola (9 revisions)
- Anemiaceae (9 revisions)
- Eriogonum subg. Oligogonum (9 revisions)
- Plagiotheciaceae Illustrations (9 revisions)
- Opuntia strigil (9 revisions)
- Papaver macounii subsp. macounii (9 revisions)
- Polystichum lemmonii (9 revisions)
- Callirhoë (9 revisions)
- Phemeranthus marginatus (9 revisions)
- Vancouveria (9 revisions)
- Canbya aurea (9 revisions)
- Cocculus carolinus (9 revisions)
- Collinsia multicolor (9 revisions)
- Dryopteris cristata (9 revisions)
- Dryopteris ludoviciana (9 revisions)
- Pteridaceae Illustrations (9 revisions)
- Opuntia oricola (9 revisions)
- Celtis reticulata (9 revisions)
- Selaginella bigelovii (9 revisions)
- Delphinium andersonii (9 revisions)
- Cupressus arizonica (9 revisions)
- Pityrogramma calomelanos var. calomelanos (9 revisions)
- Rhynchospora colorata (9 revisions)
- Sapotaceae Illustrations (9 revisions)
- Boerhavia gracillima (9 revisions)
- Atriplex saccaria var. asterocarpa (9 revisions)
- Clematis lasiantha (9 revisions)
- Lygodium (9 revisions)
- Delphinium novomexicanum (9 revisions)
- Berberis thunbergii (9 revisions)
- Aquilegia (9 revisions)
- Corylus cornuta subsp. cornuta (9 revisions)
- Pinus (9 revisions)
- Solidago uliginosa (9 revisions)
- Eriogonum heracleoides (9 revisions)
- Splachnobryaceae Illustrations (9 revisions)
- Harrisia (9 revisions)
- Hexastylis shuttleworthii var. harperi (9 revisions)
- Delphinium carolinianum subsp. vimineum (9 revisions)
- Delphinium purpusii (9 revisions)
- Betula lenta (9 revisions)
- Ranunculus occidentalis var. howellii (9 revisions)
- Penstemon (9 revisions)
- Asplenium ruta-muraria (9 revisions)
- Pteris cretica var. albolineata (9 revisions)
- Timmiaceae Illustrations (9 revisions)
- Acoraceae Illustrations (9 revisions)
- Echinocereus enneacanthus var. brevispinus (9 revisions)
- Talinum fruticosum (9 revisions)
- Ficus americana (9 revisions)
- Limnanthes sect. Inflexae (9 revisions)
- Selaginella mutica var. mutica (9 revisions)
- Quercus palustris (9 revisions)
- Quercus polymorpha (9 revisions)
- Quercus lyrata (9 revisions)
- Juniperus flaccida var. flaccida (9 revisions)
- Arecaceae Illustrations (9 revisions)
- Echinocereus arizonicus (9 revisions)
- Mirabilis nyctaginea (9 revisions)
- Thalictrum texanum (9 revisions)
- Piper aduncum (9 revisions)
- Cinnamomum (9 revisions)
- Ranunculus inamoenus var. subaffinis (9 revisions)
- Clematis fremontii (9 revisions)
- Argyrochosma limitanea subsp. mexicana (9 revisions)
- Arida blepharophylla (9 revisions)
- Solidago lepida var. lepida (9 revisions)
- Bruchiaceae Illustrations (9 revisions)
- Selenicereus grandiflorus (9 revisions)
- Abronia ameliae (9 revisions)
- Litsea (9 revisions)
- Dennstaedtia (9 revisions)
- Ficus (9 revisions)
- Thalictrum sect. Physocarpum (9 revisions)
- Selaginella underwoodii (9 revisions)
- Cheilanthes newberryi (9 revisions)
- Polygonum fowleri subsp. fowleri (9 revisions)
- Caricaceae Illustrations (9 revisions)
- Stenocereus (9 revisions)
- Myrica cerifera (9 revisions)
- Woodwardia areolata (9 revisions)
- Thalictrum sect. Omalophysa (9 revisions)
- Clematis subg. Atragene (9 revisions)
- Delphinium distichum (9 revisions)
- Nephrolepis exaltata (9 revisions)
- Gleicheniaceae (9 revisions)
- Nemacaulis denudata (9 revisions)
- Cucurbitaceae Illustrations (9 revisions)
- Echinomastus mariposensis (9 revisions)
- Rivina (9 revisions)
- Quercus grisea (9 revisions)
- Quercus marilandica (9 revisions)
- Ranunculus arizonicus var. arizonicus (9 revisions)
- Papaver argemone (9 revisions)
- Quercus fusiformis (9 revisions)
- Astrolepis cochisensis subsp. arizonica (9 revisions)
- Laënnecia filaginoides (9 revisions)
- Isoëtes tegetiformans (9 revisions)
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- Sclerocactus pubispinus (9 revisions)
- Spergularia platensis (9 revisions)
- Sesuvium maritimum (9 revisions)
- Carex fuliginosa (9 revisions)
- Delphinium variegatum subsp. variegatum (9 revisions)
- Pinus engelmannii (9 revisions)
- Clematis ligusticifolia (9 revisions)
- Ranunculus auricomus (9 revisions)
- Corydalis curvisiliqua subsp. grandibracteata (9 revisions)
- Arachniodes (9 revisions)
- Pinus flexilis (9 revisions)
- Lorandersonia spathulata (9 revisions)
- Aspleniaceae (9 revisions)
- Gigaspermaceae Illustrations (9 revisions)
- Pediocactus peeblesianus (9 revisions)
- Carpobrotus edulis (9 revisions)
- Delphinium parishii subsp. pallidum (9 revisions)
- Pinus virginiana (9 revisions)
- Asarum marmoratum (9 revisions)
- Quercus durata var. durata (9 revisions)
- Delphinium treleasei (9 revisions)
- Parietaria judaica (9 revisions)
- Thalictrum sect. Heterogamia (9 revisions)
- Dicentra cucullaria (9 revisions)
- Osmunda (9 revisions)
- Abies amabilis (9 revisions)
- Eriogonum nudum (9 revisions)
- Hypopterygiaceae Illustrations (9 revisions)
- Cactaceae subfam. Opuntioideae (9 revisions)
- Clematis virginiana (9 revisions)
- Cheilanthes viscida (9 revisions)
- Anemone berlandieri (9 revisions)
- Calycanthus occidentalis (9 revisions)
- Asarum hartwegii (9 revisions)
- Corydalis pauciflora (9 revisions)
- Juncus kelloggii (9 revisions)
- Pellaea atropurpurea (9 revisions)
- Spergularia canadensis var. canadensis (9 revisions)
- Botrychium subg. Osmundopteris (9 revisions)
- Leucobryaceae Illustrations (9 revisions)
- Coryphantha robbinsorum (9 revisions)
- Cylindropuntia tunicata (9 revisions)
- Berberis pumila (9 revisions)
- Juncus xiphioides (9 revisions)
- Argyrochosma (9 revisions)
- Tanacetum balsamita (9 revisions)
- Laportea (9 revisions)
- Ceratophyllum muricatum subsp. australe (9 revisions)
- Betula uber (9 revisions)
- Delphinium subsect. Exaltata (9 revisions)
- Phlebodium (9 revisions)
- Asplenium septentrionale (9 revisions)
- Lygodium japonicum (9 revisions)
- Eriogonum ovalifolium (9 revisions)
- Mielichhoferiaceae Illustrations (9 revisions)
- Ariocarpus (9 revisions)
- Asimina pygmaea (9 revisions)
- Planera (9 revisions)
- Delphinium subsect. Bicoloria (9 revisions)
- Juglans nigra (9 revisions)
- Ranunculus eschscholtzii var. oxynotus (9 revisions)
- Anemone multifida var. tetonensis (9 revisions)
- Selaginella standleyi (9 revisions)
- Aspidotis densa (9 revisions)
- Selaginella uncinata (9 revisions)
- Ophioglossaceae Illustrations (9 revisions)
- Polygonaceae (9 revisions)
- Grusonia pulchella (9 revisions)
- Atriplex sect. Atriplex (9 revisions)
- Corydalis micrantha subsp. micrantha (9 revisions)
- Grimmia americana (9 revisions)
- Iris douglasiana (9 revisions)
- Cistanthe umbellata (9 revisions)
- Calycanthus (9 revisions)
- Chelidonium majus (9 revisions)
- Annona squamosa (9 revisions)
- Chelone lyonii (9 revisions)
- Juniperus sect. Juniperus (9 revisions)
- Braya (9 revisions)
- Selaginella braunii (9 revisions)
- Platanaceae Illustrations (9 revisions)
- Opuntia aciculata (9 revisions)
- Pilea trianthemoides (9 revisions)
- Selaginella densa (9 revisions)
- Callirhoë digitata (9 revisions)
- Phemeranthus mengesii (9 revisions)
- Dendromecon rigida (9 revisions)
- Myosurus apetalus var. borealis (9 revisions)
- Collinsia antonina (9 revisions)
- Pterigynandraceae Illustrations (9 revisions)
- Opuntia littoralis (9 revisions)
- Juncus bolanderi (9 revisions)
- Aristolochia (9 revisions)
- Cheilanthes arizonica (9 revisions)
- Ranunculus canus (9 revisions)
- Comptonia (9 revisions)
- Collinsia corymbosa (9 revisions)
- Ephedra viridis (9 revisions)
- Aponogeton distachyos (9 revisions)
- Schoenocaulon dubium (9 revisions)
- Sarraceniaceae Illustrations (9 revisions)
- Opuntia pinkavae (9 revisions)
- Delphinium patens subsp. patens (9 revisions)
- Botrychium paradoxum (9 revisions)
- Ranunculus subg. Ficaria (9 revisions)
- Ranunculus eschscholtzii var. eschscholtzii (9 revisions)
- Asimina parviflora (9 revisions)
- Alnus rubra (9 revisions)
- Adiantum jordanii (9 revisions)
- Juniperus (9 revisions)
- Staphyleaceae Illustrations (9 revisions)
- Harrisia aboriginum (9 revisions)
- Juglans (9 revisions)
- Abies (9 revisions)
- Cassytha filiformis (9 revisions)
- Cimicifuga laciniata (9 revisions)
- Aquilegia desertorum (9 revisions)
- Huperzia porophila (9 revisions)
- Selaginella kraussiana (9 revisions)
- Tropaeolaceae Illustrations (9 revisions)
- Agavaceae Illustrations (9 revisions)
- Talinum paniculatum (9 revisions)
- Ranunculus sect. Echinella (9 revisions)
- Bucklandiella macounii subsp. alpina (9 revisions)
- Berberis canadensis (9 revisions)
- Anemopsis (9 revisions)
- Aquilegia saximontana (9 revisions)
- Calycocarpum lyonii (9 revisions)
- Ephedra antisyphilitica (9 revisions)
- Juniperus occidentalis var. occidentalis (9 revisions)
- Eriogonum prociduum (9 revisions)
- Aristolochiaceae Illustrations (9 revisions)
- Echinocereus coccineus (9 revisions)
- Mirabilis latifolia (9 revisions)
- Dysphania subsect. Incisa (9 revisions)
- Ulmus pumila (9 revisions)
- Torreya taxifolia (9 revisions)
- Hexastylis virginica (9 revisions)
- Trema lamarckiana (9 revisions)
- Fumaria (9 revisions)
- Aspidotis (9 revisions)
- Asplenium palmeri (9 revisions)
- Solidago lepida var. salebrosa (9 revisions)
- Bryaceae Illustrations (9 revisions)
- Adolphia infesta (9 revisions)
- Selenicereus spinulosus (9 revisions)
- Abronia macrocarpa (9 revisions)
- Carex paeninsulae (9 revisions)
- Pellaea lyngholmii (9 revisions)
- Nuphar advena (9 revisions)
- Delphinium decorum subsp. tracyi (9 revisions)
- Lithocarpus (9 revisions)
- Notholaena grayi subsp. sonorensis (9 revisions)
- Cheilanthes bonariensis (9 revisions)
- Polygonum fowleri subsp. hudsonianum (9 revisions)
- Caryophyllaceae Illustrations (9 revisions)
- Phyllanthus abnormis var. riograndensis (9 revisions)
- Stenocereus thurberi (9 revisions)
- Abronia umbellata var. umbellata (9 revisions)
- Aquilegia elegantula (9 revisions)
- Cheilanthes intertexta (9 revisions)
- Canellaceae (9 revisions)
- Clematis coactilis (9 revisions)
- Ulmus americana (9 revisions)
- Acrostichum (9 revisions)
- Woodwardia fimbriata (9 revisions)
- Cupressaceae Illustrations (9 revisions)
- Echinomastus warnockii (9 revisions)
- Pisonia (9 revisions)
- Nymphaea odorata subsp. tuberosa (9 revisions)
- Asimina longifolia var. longifolia (9 revisions)
- Coptis (9 revisions)
- Cimicifuga (9 revisions)
- Argemone mexicana (9 revisions)
- Pecluma dispersa (9 revisions)
- Pellaea glabella subsp. missouriensis (9 revisions)
- Thelypteris augescens (9 revisions)
- Encalyptaceae Illustrations (9 revisions)
- Sclerocactus spinosior (9 revisions)
- Sesuvium trianthemoides (9 revisions)
- Ficus pumila (9 revisions)
- Berberis swaseyi (9 revisions)
- Juglans major var. major (9 revisions)
- Betulaceae subfam. Betuloideae (9 revisions)
- Hygrohypnum montanum (9 revisions)
- Ranunculus aquatilis var. aquatilis (9 revisions)
- Polypodium appalachianum (9 revisions)
- Trichomanes boschianum (9 revisions)
- Marsilea (9 revisions)
- Ginkgoaceae Illustrations (9 revisions)
- Pediocactus peeblesianus subsp. peeblesianus (9 revisions)
- Trichostigma octandrum (9 revisions)
- Chenopodium subsect. Chenopodium (9 revisions)
- Ranunculus trilobus (9 revisions)
- Pteridium (9 revisions)
- Ficus aurea (9 revisions)
- Delphinium ramosum (9 revisions)
- Arctomecon (9 revisions)
- Platanus (9 revisions)
- Corylus americana (9 revisions)
- Psilotum (9 revisions)
- Laënnecia schiedeana (9 revisions)
- Phanerophlebia umbonata (9 revisions)
- Illiciaceae Illustrations (9 revisions)
- Hamatocactus bicolor (9 revisions)
- Cylindropuntia (9 revisions)
- Myrica (9 revisions)
- Cyrtomium falcatum (9 revisions)
- Quercus phellos (9 revisions)
- Hexastylis minor (9 revisions)
- Roemeria refracta (9 revisions)
- Anemone edwardsiana var. edwardsiana (9 revisions)
- Asplenium trichomanes subsp. quadrivalens (9 revisions)
- Woodsia (9 revisions)
- Leucodontaceae Illustrations (9 revisions)
- Coryphantha missouriensis (9 revisions)
- Cylindropuntia davisii (9 revisions)
- Delphinium hutchinsoniae (9 revisions)
- Pteris (9 revisions)
- Aconitum uncinatum (9 revisions)
- Thalictrum minus (9 revisions)
- Delphinium glaucum (9 revisions)
- Cimicifuga rubifolia (9 revisions)
- Azollaceae (9 revisions)
- Tradescantia zebrina (9 revisions)
- Tsuga mertensiana (9 revisions)
- Juniperus californica (9 revisions)
- Brodiaea californica (9 revisions)
- Mniaceae Illustrations (9 revisions)
- Anulocaulis (9 revisions)
- Saussurea angustifolia (9 revisions)
- Cylindropuntia acanthocarpa var. acanthocarpa (9 revisions)
- Ranunculus bonariensis var. trisepalus (9 revisions)
- Papaver dubium (9 revisions)
- Thalictrum sect. Anemonella (9 revisions)
- Nuphar rubrodisca (9 revisions)
- Corydalis micrantha subsp. texensis (9 revisions)
- Huperzia haleakalae (9 revisions)
- Weissia (9 revisions)
- Woodsia neomexicana (9 revisions)
- Eriophorum brachyantherum (9 revisions)
- Cakile edentula var. edentula (9 revisions)
- Equisetum laevigatum (9 revisions)
- Orchidaceae Illustrations (9 revisions)
- Opuntia (9 revisions)
- Argemone arizonica (9 revisions)
- Crataegus ×lucorum (9 revisions)
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