View source for Draba arctogena

{{Treatment/ID
|accepted_name=Draba arctogena
|accepted_authority=(E. Ekman) E. Ekman
|publications={{Treatment/Publication
|title=Svensk Bot. Tidskr.
|place=25: 492. 1932
|year=1932
}}
|basionyms={{Treatment/ID/Synonym
|name=Draba groenlandica var. arctogena
|authority=E. Ekman
}}
|synonyms={{Treatment/ID/Synonym
|name=Draba cinerea var. arctogena
|authority=(E. Ekman) B. Boivin
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba arctogena
|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 arctogena]]</div></div>
|volume=Volume 7
|mention_page=page 274, 285, 323
|treatment_page=page 292
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (cespitose); caudex branched (sometimes with persistent leaf remains); sometimes scapose. <b>Stems</b> unbranched, 0.3–1.4 dm, pubescent throughout, trichomes simple, 0.2–1 mm, and 2–6-rayed, 0.05–0.3 mm. <b>Basal</b> leaves rosulate; petiolate; petiole base and margin ciliate, (trichomes mostly simple, 0.2–1 mm); blade oblanceolate to narrowly obovate, 0.4–1.7 cm × 1.5–6 mm, margins entire or with 1–3 teeth on each side, surfaces pubescent with primarily simple trichomes, 0.3–1mm, abaxially mixed with stalked, 4–10-rayed ones, 0.1–0.2 mm. <b>Cauline</b> leaves 0 or 1; sessile; blade ovate to oblong, margins entire or toothed, surfaces pubescent as basal. <b>Racemes</b> 2–14(–17)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. <b>Fruiting</b> pedicels suberect to ascending, straight, 1–5(–7) mm, pubescent, trichomes simple and 2–4-rayed. <b>Flowers</b>: sepals ovate, 1.8–2.5 mm, pubescent, (trichomes simple and short-stalked, 2–4-rayed); petals white, spatulate, 3–4 × 1.5–2 mm; anthers ovate, 0.3–0.4 mm. <b>Fruits</b> oblong, plane, flattened, 4–9 × 2–3.5 mm; valves pubescent, trichomes short-stalked, 2–4-rayed, 0.1–0.5 mm, sometimes with simple ones; ovules 20–32 per ovary; style 0.1–0.4 mm (stigma distinctly wider than style). <b>Seeds</b> ovoid, 0.7–1 × 0.5–0.6 mm. <b>2n</b> = 48.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Jul.
|habitat=Scree, sandy hills, gravel flats
|elevation=0-450 m
|distribution=Greenland;N.W.T.;Nunavut.
|discussion=<p>Draba arctogena is sometimes confused with D. norvegica, from which it differs by having less elongated fruiting racemes, abaxial leaf surfaces with 4–10-rayed (versus cruciform or, rarely, 2–6-rayed) trichomes, and fruits with 2–4-rayed trichomes, 0.1–0.5 mm, (versus glabrous or with simple and 2–4-rayed trichomes, 0.05–0.25 mm). The limits of D. arctica, D. arctogena, D. cinerea, and D. oblongata need to be critically evaluated in light of molecular and cytological data.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba arctogena
|author=
|authority=(E. Ekman) E. Ekman
|rank=species
|parent rank=genus
|synonyms=Draba cinerea var. arctogena
|basionyms=Draba groenlandica var. arctogena
|family=Brassicaceae
|phenology=Flowering Jun–Jul.
|habitat=Scree, sandy hills, gravel flats
|elevation=0-450 m
|distribution=Greenland;N.W.T.;Nunavut.
|reference=None
|publication title=Svensk Bot. Tidskr.
|publication year=1932
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V7/V7_369.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba arctogena
}}<!--

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