Difference between revisions of "Draba reptans"

(Lamarck) Fernald

Rhodora 36: 368. 1934.

Basionym: Arabis reptans Lamarck
Synonyms: Draba caroliniana Walter Draba caroliniana var. dolichocarpa O. E. Schulz Draba caroliniana var. hunteri Payson & H. St. John Draba caroliniana var. micrantha (Nuttall) A. Gray Draba caroliniana subsp. stellifera (O. E. Schulz) Payson & H. St. John Draba caroliniana var. umbellata Torrey & A. Gray Draba coloradensis (Michaux) Rafinesque Draba hispidula (Nuttall) Lunell Draba micrantha unknown Draba reptans var. micrantha (Nuttall) Fernald Draba reptans subsp. stellifera (O. E. Schulz) Abrams Draba reptans var. stellifera (O. E. Schulz) C. L. Hitchcock Draba umbellata unknown Tomostima caroliniana unknown Tomostima hispidula unknown Tomostima micrantha unknown
Treatment appears in FNA Volume 7. Treatment on page 333. Mentioned on page 271, 272, 273, 334.
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|name=Draba caroliniana
 
|name=Draba caroliniana
 
|authority=Walter
 
|authority=Walter
}}{{Treatment/ID/Synonym
+
}} {{Treatment/ID/Synonym
 
|name=Draba caroliniana var. dolichocarpa
 
|name=Draba caroliniana var. dolichocarpa
 
|authority=O. E. Schulz
 
|authority=O. E. Schulz
}}{{Treatment/ID/Synonym
+
}} {{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
+
}} {{Treatment/ID/Synonym
 
|name=Draba caroliniana var. micrantha
 
|name=Draba caroliniana var. micrantha
 
|authority=(Nuttall) A. Gray
 
|authority=(Nuttall) A. Gray
}}{{Treatment/ID/Synonym
+
}} {{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
+
}} {{Treatment/ID/Synonym
 
|name=Draba caroliniana var. umbellata
 
|name=Draba caroliniana var. umbellata
 
|authority=Torrey & A. Gray
 
|authority=Torrey & A. Gray
}}{{Treatment/ID/Synonym
+
}} {{Treatment/ID/Synonym
 
|name=Draba coloradensis
 
|name=Draba coloradensis
 
|authority=(Michaux) Rafinesque
 
|authority=(Michaux) Rafinesque
}}{{Treatment/ID/Synonym
+
}} {{Treatment/ID/Synonym
 
|name=Draba hispidula
 
|name=Draba hispidula
 
|authority=(Nuttall) Lunell
 
|authority=(Nuttall) Lunell
}}{{Treatment/ID/Synonym
+
}} {{Treatment/ID/Synonym
 
|name=Draba micrantha
 
|name=Draba micrantha
 
|authority=unknown
 
|authority=unknown
}}{{Treatment/ID/Synonym
+
}} {{Treatment/ID/Synonym
 
|name=Draba reptans var. micrantha
 
|name=Draba reptans var. micrantha
 
|authority=(Nuttall) Fernald
 
|authority=(Nuttall) Fernald
}}{{Treatment/ID/Synonym
+
}} {{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
+
}} {{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
+
}} {{Treatment/ID/Synonym
 
|name=Draba umbellata
 
|name=Draba umbellata
 
|authority=unknown
 
|authority=unknown
}}{{Treatment/ID/Synonym
+
}} {{Treatment/ID/Synonym
 
|name=Tomostima caroliniana
 
|name=Tomostima caroliniana
 
|authority=unknown
 
|authority=unknown
}}{{Treatment/ID/Synonym
+
}} {{Treatment/ID/Synonym
 
|name=Tomostima hispidula
 
|name=Tomostima hispidula
 
|authority=unknown
 
|authority=unknown
}}{{Treatment/ID/Synonym
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}} {{Treatment/ID/Synonym
 
|name=Tomostima micrantha
 
|name=Tomostima micrantha
 
|authority=unknown
 
|authority=unknown
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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=
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|publication year=1934
 
|publication year=1934
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V7/V7_458.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V7/V7_458.xml
 
|tribe=Brassicaceae tribe Arabideae
 
|tribe=Brassicaceae tribe Arabideae
 
|genus=Draba
 
|genus=Draba

Revision as of 17:57, 18 September 2019

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

V7 458-distribution-map.gif

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.

Lower Taxa

None.
... more about "Draba reptans"
Ihsan A. Al-Shehbaz +, Michael D. Windham +  and Reidar Elven +
(Lamarck) Fernald +
Arabis reptans +
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. +  and Wyo. +
0-3000 m +
Rock outcrops, dry slopes and hillsides, prairies, glades, roadsides, disturbed sites +
Flowering Feb–Jun(-Aug). +
Draba caroliniana +, Draba caroliniana var. dolichocarpa +, Draba caroliniana var. hunteri +, Draba caroliniana var. micrantha +, Draba caroliniana subsp. stellifera +, Draba caroliniana var. umbellata +, Draba coloradensis +, Draba hispidula +, Draba micrantha +, Draba reptans var. micrantha +, Draba reptans subsp. stellifera +, Draba reptans var. stellifera +, Draba umbellata +, Tomostima caroliniana +, Tomostima hispidula +  and Tomostima micrantha +
Draba reptans +
species +