Difference between revisions of "Draba yukonensis"
Publ. Bot. (Ottawa) 4: 37, plate 7. 1975.
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|distribution=Yukon. | |distribution=Yukon. | ||
|discussion=<p>Of conservation concern.</p><!-- | |discussion=<p>Of conservation concern.</p><!-- | ||
− | --><p>Draba yukonensis is known only from Kluane National Park, southwestern Yukon Territory.</p> | + | --><p><i>Draba yukonensis</i> is known only from Kluane National Park, southwestern Yukon Territory.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
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|publication year=1975 | |publication year=1975 | ||
|special status= | |special status= | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V7/V7_486.xml |
|tribe=Brassicaceae tribe Arabideae | |tribe=Brassicaceae tribe Arabideae | ||
|genus=Draba | |genus=Draba |
Revision as of 18:57, 18 September 2019
Perennials; (short-lived); caudex simple or branched (with persistent leaf remains); not scapose. Stems branched, 0.4–2 dm, pubescent throughout, trichomes simple, 0.3–1.2 mm, and 2–6-rayed, 0.05–0.6 mm. Basal leaves rosulate; subsessile; blade oblanceolate to narrowly so, 0.3–1 cm × 0.5–2 mm, margins entire, (ciliate, trichomes simple, to 1.3 mm), surfaces pubescent, abaxially with (rigid), simple and 2-rayed trichomes, 0.4–1.2 mm, sometimes with short-stalked, 3–6-rayed ones, 0.1–0.3 mm, adaxially with simple trichomes. Cauline leaves 1–3; sessile; blade ovate to oblong, margins entire, surfaces pubescent as basal. Racemes 5–20-flowered, ebracteate, considerably elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels erect to ascending, straight, 0.5–3 mm, pubescent as stem. Flowers: sepals ovate, 1.2–1.6 mm, pubescent, (trichomes simple and 2–4-rayed); petals white, spatulate, 1.5–2 × 0.7–0.8 mm; anthers ovate, ca. 0.2 mm. Fruits ovoid to oblong, plane, not flattened, 2–5 × 1.5–2 mm; valves pubescent, trichomes short-stalked, 4- or 5-rayed, 0.05–0.3 mm; ovules 36–52 per ovary; style 0.1–0.3 mm. Seeds oblong, 0.6–0.8 × 0.3–0.4 mm.
Phenology: Flowering late May–Jun.
Habitat: Open stony ridges on ancient beach in grassy areas and aspen stands
Elevation: ca. 600 m
Discussion
Of conservation concern.
Draba yukonensis is known only from Kluane National Park, southwestern Yukon Territory.
Selected References
None.