Difference between revisions of "Draba sphaerocarpa"
Amer. J. Bot. 4: 266. 1917.
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| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=E | ||
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|name=Draba argyrea var. sphaerocarpa | |name=Draba argyrea var. sphaerocarpa | ||
|authority=(J. F. Macbride & Payson) O. E. Schulz | |authority=(J. F. Macbride & Payson) O. E. Schulz | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba sphaerocarpa | |hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba sphaerocarpa | ||
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name=Draba sphaerocarpa | name=Draba sphaerocarpa | ||
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|authority=J. F. Macbride & Payson | |authority=J. F. Macbride & Payson | ||
|rank=species | |rank=species | ||
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|publication title=Amer. J. Bot. | |publication title=Amer. J. Bot. | ||
|publication year=1917 | |publication year=1917 | ||
| − | |special status= | + | |special status=Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_471.xml |
|tribe=Brassicaceae tribe Arabideae | |tribe=Brassicaceae tribe Arabideae | ||
|genus=Draba | |genus=Draba | ||
Latest revision as of 23:33, 5 November 2020
Perennials; caudex branched (branches loose or compact, sometimes terminating in sterile rosettes); scapose. Stems unbranched, (0.15–)0.3–0.8(–1.1) dm, usually densely pubescent throughout, trichomes stalked, 2–5-rayed, 0.1–0.4 mm, with subsessile, smaller, 4–8-rayed ones, rarely proximally with some simple trichomes. Basal leaves rosulate; subsessile; petiole margin not ciliate; blade oblanceolate to obovate or linear-oblanceolate, (0.2–)0.3–0.9(–1.5) cm × 1–2.5(–4) mm, margins entire, (not ciliate), surfaces canescent with short-stalked, 8–15-rayed, stellate trichomes, 0.1–0.25 mm. Cauline leaves 0. Racemes (4–)6–18(–23)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. Fruiting pedicels divaricate-ascending to ascending, straight, 4–9(–13) mm, pubescent as stem. Flowers: sepals oblong, 2–3.5 mm, pubescent, (trichomes 4–6-rayed); petals yellow or lemon, oblanceolate to spatulate, 4–6 × 1.5–3 mm; anthers ovate, 0.4–0.6 mm. Fruits ellipsoid to ovoid, plane, inflated at least basally, 2–5(–6) × 1.5–2.5(–3.5) mm; valves pubescent, trichomes 2–4-rayed, 0.03–0.2 mm (some or all rays spurred); ovules 4–10(–12) per ovary; style 0.2–0.9(–1.2) mm. Seeds ovoid, 1–1.6 × 0.7–1.2 mm. 2n = 20.
Phenology: Flowering May–Jul.
Habitat: Granite outcrops and rocky slopes in open pine forests
Elevation: 2100-2800 m
Discussion
Draba sphaerocarpa is a distinctive species known only from Boise, Custer, Idaho, and Valley counties in central Idaho.
Selected References
None.