Difference between revisions of "Draba reptans"
Rhodora 36: 368. 1934.
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|year=1934 | |year=1934 | ||
}} | }} | ||
| − | |basionyms={{Treatment/ID/ | + | |special_status={{Treatment/ID/Special_status |
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
| + | |basionyms={{Treatment/ID/Basionym | ||
|name=Arabis reptans | |name=Arabis reptans | ||
|authority=Lamarck | |authority=Lamarck | ||
| + | |rank=species | ||
| + | |publication_title=in J. Lamarck et al., Encycl. | ||
| + | |publication_place=1: 222. 1783 | ||
}} | }} | ||
|synonyms={{Treatment/ID/Synonym | |synonyms={{Treatment/ID/Synonym | ||
|name=Draba caroliniana | |name=Draba caroliniana | ||
|authority=Walter | |authority=Walter | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba caroliniana var. dolichocarpa | |name=Draba caroliniana var. dolichocarpa | ||
|authority=O. E. Schulz | |authority=O. E. Schulz | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba caroliniana var. hunteri | |name=Draba caroliniana var. hunteri | ||
|authority=Payson & H. St. John | |authority=Payson & H. St. John | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba caroliniana var. micrantha | |name=Draba caroliniana var. micrantha | ||
|authority=(Nuttall) A. Gray | |authority=(Nuttall) A. Gray | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba caroliniana subsp. stellifera | |name=Draba caroliniana subsp. stellifera | ||
|authority=(O. E. Schulz) Payson & H. St. John | |authority=(O. E. Schulz) Payson & H. St. John | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=subspecies |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba caroliniana var. umbellata | |name=Draba caroliniana var. umbellata | ||
|authority=Torrey & A. Gray | |authority=Torrey & A. Gray | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba coloradensis | |name=Draba coloradensis | ||
|authority=(Michaux) Rafinesque | |authority=(Michaux) Rafinesque | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba hispidula | |name=Draba hispidula | ||
|authority=(Nuttall) Lunell | |authority=(Nuttall) Lunell | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba micrantha | |name=Draba micrantha | ||
| − | |authority= | + | |authority= |
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba reptans var. micrantha | |name=Draba reptans var. micrantha | ||
|authority=(Nuttall) Fernald | |authority=(Nuttall) Fernald | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba reptans subsp. stellifera | |name=Draba reptans subsp. stellifera | ||
|authority=(O. E. Schulz) Abrams | |authority=(O. E. Schulz) Abrams | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=subspecies |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba reptans var. stellifera | |name=Draba reptans var. stellifera | ||
|authority=(O. E. Schulz) C. L. Hitchcock | |authority=(O. E. Schulz) C. L. Hitchcock | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=variety |
| + | }} {{Treatment/ID/Synonym | ||
|name=Draba umbellata | |name=Draba umbellata | ||
| − | |authority= | + | |authority= |
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Tomostima caroliniana | |name=Tomostima caroliniana | ||
| − | |authority= | + | |authority= |
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Tomostima hispidula | |name=Tomostima hispidula | ||
| − | |authority= | + | |authority= |
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Tomostima micrantha | |name=Tomostima micrantha | ||
| − | |authority= | + | |authority= |
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba reptans | |hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba reptans | ||
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|elevation=0-3000 m | |elevation=0-3000 m | ||
|distribution=Alta.;B.C.;Man.;Ont.;Sask.;Ala.;Ariz.;Ark.;Calif.;Colo.;Ga.;Idaho;Ill.;Iowa;Kans.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Wash.;Wis.;Wyo. | |distribution=Alta.;B.C.;Man.;Ont.;Sask.;Ala.;Ariz.;Ark.;Calif.;Colo.;Ga.;Idaho;Ill.;Iowa;Kans.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;N.Mex.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Wash.;Wis.;Wyo. | ||
| − | |discussion=<p>Draba reptans is often confused with D. cuneifolia, but the two are easily separated. The rachises and pedicels of D. reptans are usually glabrous (rarely with a few isolated trichomes); those of D. cuneifolia are always densely pubescent. Interestingly, both species show parallel variations in chromosome number; it is currently unclear whether this variation is real or the result of misidentified specimens and/or erroneous counts.</p> | + | |discussion=<p><i>Draba reptans</i> is often confused with <i>D. cuneifolia</i>, but the two are easily separated. The rachises and pedicels of <i>D. reptans</i> are usually glabrous (rarely with a few isolated trichomes); those of <i>D. cuneifolia</i> are always densely pubescent. Interestingly, both species show parallel variations in chromosome number; it is currently unclear whether this variation is real or the result of misidentified specimens and/or erroneous counts.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
| Line 83: | Line 106: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Draba reptans | name=Draba reptans | ||
| − | |||
|authority=(Lamarck) Fernald | |authority=(Lamarck) Fernald | ||
|rank=species | |rank=species | ||
| Line 97: | Line 119: | ||
|publication title=Rhodora | |publication title=Rhodora | ||
|publication year=1934 | |publication year=1934 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_458.xml |
|tribe=Brassicaceae tribe Arabideae | |tribe=Brassicaceae tribe Arabideae | ||
|genus=Draba | |genus=Draba | ||
Latest revision as of 23:33, 5 November 2020
Annuals; scapose or subscapose. Stems (simple or few from, or distal to, base), unbranched, (0.1–)0.3–1.2(–1.6) dm, sparsely to densely pubescent proximally, trichomes 2 (or 3)-rayed, 0.1–0.6 mm, sometimes with simple or spurred ones, to 0.9 mm, distally usually glabrous, rarely with few trichomes. Basal leaves not rosulate; petiole obscure; blade elliptic or spatulate to obovate or suborbicular, 0.5–2.3(–3) cm × 1.5–8(–13) mm, margins entire, surfaces pubescent abaxially with stalked, 2–4-rayed trichomes, 0.1–0.5 mm, adaxially with simple trichomes, 0.6–1 mm, with stalked, 2-rayed ones, to 0.7 mm. Cauline leaves usually 0, rarely 1–3; sessile; blade similar to basal. Racemes (3–)5–12(–16)-flowered, ebracteate, (subumbellate), not elongated in fruit; rachis not flexuous, usually glabrous, rarely sparsely pubescent. Fruiting pedicels horizontal to divaricate-ascending, straight, (1–)2–7(–9) mm, glabrous or glabrate. Flowers: (late-season ones cleistogamous, apetalous); sepals oblong, 1.5–2.3 mm, pubescent, (trichomes simple); petals (rarely absent), white, spatulate, 2–4.5 × 1–1.5 mm; anthers ovate, 0.4–0.5 mm. Fruits linear to linear-oblong, plane, flattened, (5–)7–16(–20) × 1.2–2.3 mm; valves glabrous or pubescent, trichomes usually simple and antrorse, 0.1–0.3 mm, rarely with fewer, spurred or 2-rayed ones; ovules 32–88 per ovary; style 0.02–0.1 mm. Seeds oblong to ovoid, 0.5–0.8 × 0.3–0.5 mm. 2n = 16, 30, 32.
Phenology: Flowering Feb–Jun(-Aug).
Habitat: Rock outcrops, dry slopes and hillsides, prairies, glades, roadsides, disturbed sites
Elevation: 0-3000 m
Distribution
Alta., B.C., Man., Ont., Sask., Ala., Ariz., Ark., Calif., Colo., Ga., Idaho, Ill., Iowa, Kans., Mass., Mich., Minn., Mo., Mont., Nebr., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., S.C., S.Dak., Tenn., Tex., Utah, Wash., Wis., Wyo.
Discussion
Draba reptans is often confused with D. cuneifolia, but the two are easily separated. The rachises and pedicels of D. reptans are usually glabrous (rarely with a few isolated trichomes); those of D. cuneifolia are always densely pubescent. Interestingly, both species show parallel variations in chromosome number; it is currently unclear whether this variation is real or the result of misidentified specimens and/or erroneous counts.
Selected References
None.