View source for Draba cana

{{Treatment/ID
|accepted_name=Draba cana
|accepted_authority=Rydberg
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=29: 241. 1902
|year=1902
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Draba breweri var. cana
|authority=(Rydberg) Rollins
|rank=variety
}} {{Treatment/ID/Synonym
|name=Draba valida
|authority=Goodding
|rank=species
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba cana
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Arabideae]]</div><div class="higher-taxon"><small>genus</small>[[Draba]]</div><div class="higher-taxon"><small>species</small>[[Draba cana]]</div></div>
|volume=Volume 7
|mention_page=page 277, 297, 299, 314, 331
|treatment_page=page 298
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; caudex simple or branched (branches short); not scapose. <b>Stems</b> unbranched or branched distally, (0.6–)1–3(–3.8) dm, pubescent throughout, trichomes simple, 0.5–1mm, with 4–10-rayed ones, 0.05–0.2 mm (mostly branched on basal parts). <b>Basal</b> leaves rosulate; petiolate; petiole ciliate throughout; blade linear to oblanceolate or oblong, (0.5–)0.8–2(–3.5) cm × 1.5–4(–11) mm, margins entire or dentate, (base and apex ciliate, trichomes simple, 0.3–0.8 mm), surfaces pubescent with short-stalked, 4–12-rayed trichomes, 0.1–0.3 mm. <b>Cauline</b> leaves 3–10(–17), (not overlapping); sessile; blade lanceolate to ovate or oblong, margins entire or dentate, surfaces pubescent as basal (adaxially with simple and forked trichomes near blade base). <b>Racemes</b> (10–)15–47(–63)-flowered, basally bracteate, often considerably elongated in fruit; rachis not flexuous, densely pubescent, trichomes 4–10-rayed (0.05–0.2 mm), and fewer simple ones. <b>Fruiting</b> pedicels suberect or ascending, straight, 2–5(–10) mm, pubescent as rachis. <b>Flowers</b>: sepals (green or lavender), oblong to ovate, 1.5–2 mm, pubescent, (trichomes simple and few-rayed); petals white, oblanceolate to spatulate, 2.3–3.7(–4.5) × 0.7–1.7 mm; anthers ovate, 0.1–0.2 mm. <b>Fruits</b> (subappressed to rachis), linear-lanceolate to linear or, rarely, ovate-oblong, slightly twisted or plane, flattened, (5–)6–11 × 1.5–2(–2.5) mm; valves pubescent, trichomes short-stalked, 3–7-rayed, 0.05–0.3 mm; ovules 28–48 per ovary; style 0.1–0.6 mm. <b>Seeds</b> ovoid, 0.5–0.7(–0.9) × 0.3–0.5 mm. <b>2n</b> = 32.</span><!--

-->{{Treatment/Body
|phenology=Flowering (May-)Jun–Aug.
|habitat=Rock outcrops and talus, open prairie benchlands, roadsides, meadows, alpine tundra
|elevation=0-4100 m
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;Ont.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Idaho;Maine;Mich.;Mont.;Nev.;N.H.;N.Mex.;S.Dak.;Utah;Vt.;Wash.;Wis.;Wyo.
|discussion=<p>The limits of <i>Draba cana</i> have long been confused, and the species was treated as a synonym of the Himalayan <i>D. lanceolata</i> Royle (M. L. Fernald 1934; C. L. Hitchcock 1941) or as a variety of the western North American <i>D. breweri</i> (R. C. Rollins 1993). However, G. A. Mulligan (1971) clearly demonstrated that all three are distinct and should be maintained. Some Utah plants corresponding to the type of D. valida have shorter and wider oblong-ovate fruits. In all other aspects, they are indistinguishable from <i>D. cana</i>. Additional studies are needed to establish whether such plants should be formally recognized.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba cana
|authority=Rydberg
|rank=species
|parent rank=genus
|synonyms=Draba breweri var. cana;Draba valida
|basionyms=
|family=Brassicaceae
|phenology=Flowering (May-)Jun–Aug.
|habitat=Rock outcrops and talus, open prairie benchlands, roadsides, meadows, alpine tundra
|elevation=0-4100 m
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);N.W.T.;Ont.;Que.;Sask.;Yukon;Alaska;Calif.;Colo.;Idaho;Maine;Mich.;Mont.;Nev.;N.H.;N.Mex.;S.Dak.;Utah;Vt.;Wash.;Wis.;Wyo.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1902
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V7/V7_385.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba cana
}}<!--

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