View source for Draba macounii

{{Treatment/ID
|accepted_name=Draba macounii
|accepted_authority=O. E. Schulz in H. G. A. Engler
|publications={{Treatment/Publication
|title=in H. G. A. Engler, Pflanzenr.
|place=89[IV,105]: 97. 1927
|year=1927
}}
|basionyms=
|synonyms=
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba macounii
|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 macounii]]</div></div>
|volume=Volume 7
|mention_page=page 280, 282, 285, 287, 290
|treatment_page=page 318
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (cespitose); caudex simple or branched (with persistent leaf bases, branches sometimes terminating in sterile rosettes); scapose. <b>Stems</b> unbranched, (0.06–)0.1–0.4(–0.6) dm, usually pubescent, rarely glabrous, trichomes simple and stalked, 2–4-rayed, 0.15–0.9 mm. <b>Basal</b> leaves rosulate; petiole (obscure), margin ciliate, (trichomes simple, 0.3–1 mm); blade oblanceolate to obovate, (0.4–)0.6–1(–1.5) cm × (1–)2–4 mm, margins entire, surfaces usually pubescent abaxially, rarely glabrous, with short-stalked, 2–5-rayed trichomes, 0.1–0.5 mm, adaxially glabrous or pubescent with simple and short-stalked, 2-rayed trichomes. <b>Cauline</b> leaves 0. <b>Racemes</b> 3–10(–13)-flowered, ebracteate, (subumbellate), slightly elongated in fruit; rachis not flexuous, usually pubescent as stem, rarely glabrous. <b>Fruiting</b> pedicels horizontal to divaricate (not expanded basally), curved upward, 1.5–4.5(–6) mm, abaxially pubescent as stem, adaxially usually glabrous, rarely throughout. <b>Flowers</b>: sepals ovate, 1.5–2.5 mm, glabrous or pubescent, (trichomes simple and short-stalked, 2- or 3-rayed); petals pale yellow, spatulate, 2.7–4 × 1–2 mm; anthers ovate, 0.2–0.3 mm. <b>Fruits</b> subglobose to ovoid or ellipsoid, plane, inflated at least basally, 4–8 × 2–4.5 mm; valves glabrous; ovules 10–14(–16) per ovary; style 0.1–0.5 mm. <b>Seeds</b> ovoid, 1–1.2 × 0.6–0.8 mm. <b>2n</b> = 64.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Aug.
|habitat=Rock outcrops, talus, tundra
|elevation=700-2800 m
|distribution=Alta.;B.C.;Yukon;Alaska;Mont.
|discussion=<p><i>Draba macounii</i> is often confused with the circumpolar decaploid (2n = 80) <i>D. alpina</i>. Plants of the former have scapes (0.6–)1–4(–6) cm, fruiting pedicels divaricate to horizontal, gently curved, and 1.5–4.5(–6) mm, and petals pale yellow, spatulate, and 2.7–4 × 1–2 mm. By contrast, <i>D. alpina</i> has scapes (3–)5–17(–28) cm, fruiting pedicels divaricate-ascending to ascending, often straight, and (3–)4–14(–30) mm, and petals bright yellow, obovate, and 3.5–5 × 1.7–2.5 mm. R. C. Rollins (1993) indicated that the species occurs in Colorado, but we have not seen any material from that state.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba macounii
|author=
|authority=O. E. Schulz in H. G. A. Engler
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Brassicaceae
|phenology=Flowering Jun–Aug.
|habitat=Rock outcrops, talus, tundra
|elevation=700-2800 m
|distribution=Alta.;B.C.;Yukon;Alaska;Mont.
|reference=None
|publication title=in H. G. A. Engler, Pflanzenr.
|publication year=1927
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V7/V7_425.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba macounii
}}<!--

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