View source for Draba pennellii

{{Treatment/ID
|accepted_name=Draba pennellii
|accepted_authority=Rollins
|publications={{Treatment/Publication
|title=J. Arnold Arbor.
|place=64: 502. 1983
|year=1983
}}
|basionyms=
|synonyms=
|hierarchy=Brassicaceae;Brassicaceae tribe Arabideae;Draba;Draba pennellii
|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 pennellii]]</div></div>
|volume=Volume 7
|mention_page=page 278, 283
|treatment_page=page 329
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (cespitose, often forming mats); caudex branched (elongated, with persistent leaf bases, branches sometimes terminating in sterile rosettes); sometimes scapose. <b>Stems</b> unbranched, (0.15–)0.3–0.7(–1) dm, pubescent proximally, trichomes simple and spurred, 0.4–0.8 mm, and short-stalked, 2–4-rayed, 0.1–0.4 mm, (sometimes with simple trichomes distally). <b>Basal</b> leaves subrosulate; sessile; blade oblanceolate to oblong, (0.3–)0.5–0.8 cm × 1–3 mm, (base ciliate, trichomes simple, 0.2–0.8 mm), margins entire, (not ciliate), surfaces usually pubescent, with stalked, (2–)4 (or 5)-rayed trichomes, 0.2–0.5 mm, adaxially sometimes glabrate, or primarily with simple trichomes, 0.3–0.8 mm. <b>Cauline</b> leaves (0 or) 1–4; sessile; blade ovate to oblong, margins entire, surfaces pubescent as basal. <b>Racemes</b> (3–)7–15(–20)-flowered, ebracteate, elongated in fruit; rachis not flexuous, pubescent as stem. <b>Fruiting</b> pedicels divaricate-ascending to ascending, straight, 3–10 mm, pubescent, trichomes simple and short-stalked, 2–4-rayed, (0.1–0.4 mm). <b>Flowers</b>: sepals ovate to oblong, 2–3 mm, pubescent, (trichomes simple, with fewer, short-stalked, 2-rayed ones); petals white, obovate, 3.5–6 × 1.5–2.8 mm; anthers oblong, 0.5–0.6 mm. <b>Fruits</b> broadly or, rarely, narrowly lanceolate to elliptic or ovate, plane or slightly twisted, flattened, (4)5–8(–10) × 2–3.2 mm; valves (each with distinct midvein), pubescent, trichomes simple and short-stalked, 2-rayed, 0.08–0.2 mm; ovules 12–24 per ovary; style (0.7–)1–1.8(–2.1) mm. <b>Seeds</b> oblong, 0.9–1.3 × 0.7–1 mm. <b>2n</b> = 32.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Jul.
|habitat=Rock outcrops and talus slopes in pinyon-juniper, sagebrush, mountain shrub, and mixed conifer communities
|elevation=1900-3500 m
|distribution=Nev.
|discussion=<p>Of conservation concern.</p><!--
--><p>Draba pennellii is known from White Pine County in east-central Nevada. It is easily distinguished from other white-flowered species in the region by its elongated, many-branched caudices, long styles, usually few-leaved or, rarely, leafless flowering stems, and distinct midvein on fruit valves.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Draba pennellii
|author=
|authority=Rollins
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Brassicaceae
|phenology=Flowering May–Jul.
|habitat=Rock outcrops and talus slopes in pinyon-juniper, sagebrush, mountain shrub, and mixed conifer communities
|elevation=1900-3500 m
|distribution=Nev.
|reference=None
|publication title=J. Arnold Arbor.
|publication year=1983
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V7/V7_448.xml
|tribe=Brassicaceae tribe Arabideae
|genus=Draba
|species=Draba pennellii
}}<!--

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