View source for Draba oblongata

{{Treatment/ID
|accepted_name=Draba oblongata
|accepted_authority=R. Brown ex de Candolle
|publications={{Treatment/Publication
|title=Syst. Nat.
|place=2: 342. 1821
|year=1821
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Draba arctica subsp. groenlandica
|authority=(E. Ekman) Böcher
}}{{Treatment/ID/Synonym
|name=Draba cinerea subsp. groenlandica
|authority=(E. Ekman) Böcher
}}{{Treatment/ID/Synonym
|name=Draba groenlandica
|authority=E. Ekman
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba oblongata
|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 oblongata]]</div></div>
|volume=Volume 7
|mention_page=page 274, 285, 292, 324
|treatment_page=page 323
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (cespitose); caudex branched (with persistent leaf remains); sometimes scapose. <b>Stems</b> unbranched, (0.2–)0.4–1.5(–1.9) dm, pubescent throughout, trichomes simple, 0.4–0.8 mm, and short-stalked, 4–10-rayed, 0.05–0.3 mm, (mostly branched distally). <b>Basal</b> leaves rosulate; petiolate; petiole base and margin ciliate, (trichomes simple, 0.3–1 mm); blade oblanceolate to lanceolate, 0.4–1.5 cm × 1.5–5 mm, margins entire, surfaces pubescent with simple and stalked, 2- or 3-rayed trichomes, 0.4–1 mm, with short-stalked, 8–12-rayed, stellate ones, 0.1–0.2 mm. <b>Cauline</b> leaves 0–2; sessile; blade oblong to broadly ovate, margins entire, surfaces pubescent as basal. <b>Racemes</b> 5–13(–18)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem distally. <b>Fruiting</b> pedicels divaricate to ascending, straight, 2–6(–8) mm, pubescent as rachis. <b>Flowers</b>: sepals ovate, 2–3 mm, pubescent, (trichomes simple and short-stalked, mostly 2-rayed); petals white, spatulate to obovate, 3.5–5 × 1.5–2.5 mm; anthers ovate, 0.2–0.3 mm. <b>Fruits</b> elliptic to oblong, plane, slightly flattened, 4–8(–9.5) × 2–3(–4) mm; valves pubescent, trichomes short-stalked, (2–)5–12-rayed, 0.05–3 mm; ovules 24–36 per ovary; style 0.2–0.8 mm (stigma considerably wider than style, often appearing 2-lobed). <b>Seeds</b> ovate, 0.7–1 × 0.5–0.6 mm. <b>2n</b> = 64.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Jul.
|habitat=Ridges and hillsides, sand and gravel flood plains, swales, tundra
|elevation=0-400 m
|distribution=Greenland;N.W.T.;Nunavut;Alaska;e Asia (Russian Far East;Siberia).
|discussion=<p>Plants of Draba oblongata are occasionally misidentified as decaploid (2n = 80) D. arctica, but the former is readily separated by a preponderance of simple (versus stellate) trichomes on both leaf blade surfaces. Draba oblongata is sometimes confused with D. micropetala, but the latter has pale yellow (versus white) flowers, fruits pubescent with simple and spurred (versus (2–)5–12-rayed) trichomes, and stigmas as wide as (versus much wider than) the style.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba oblongata
|author=
|authority=R. Brown ex de Candolle
|rank=species
|parent rank=genus
|synonyms=Draba arctica subsp. groenlandica;Draba cinerea subsp. groenlandica;Draba groenlandica
|basionyms=
|family=Brassicaceae
|phenology=Flowering Jun–Jul.
|habitat=Ridges and hillsides, sand and gravel flood plains, swales, tundra
|elevation=0-400 m
|distribution=Greenland;N.W.T.;Nunavut;Alaska;e Asia (Russian Far East;Siberia).
|reference=None
|publication title=Syst. Nat.
|publication year=1821
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V7/V7_437.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba oblongata
}}<!--

-->[[Category:Treatment]][[Category:Draba]]