View source for Lepidium paysonii

{{Treatment/ID
|accepted_name=Lepidium paysonii
|accepted_authority=Rollins
|publications={{Treatment/Publication
|title=Cruciferae Continental N. Amer.,
|place=577. 1993
|year=1993
}}
|basionyms=
|synonyms=
|hierarchy=Brassicaceae;Brassicaceae tribe Lepidieae;Lepidium;Lepidium paysonii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Lepidieae]]</div><div class="higher-taxon"><small>genus</small>[[Lepidium]]</div><div class="higher-taxon"><small>species</small>[[Lepidium paysonii]]</div></div>
|volume=Volume 7
|mention_page=page 572
|treatment_page=page 590
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (caudex woody, to 6 mm diam.); densely puberulent. <b>Stems</b> several from base (caudex), erect or ascending to decumbent, branched distally, 0.5–2.3 dm. <b>Basal</b> leaves not rosulate; petiole 1–2.5 cm; blade oblanceolate (rarely with 1 or 2 lateral lobes), 1–3.5 cm × 3–7 mm, margins serrate-dentate. <b>Cauline</b> leaves shortly petiolate or sessile; blade narrowly oblanceolate to linear, 0.7–3.5 cm × 1–4 mm, base attenuate, not auriculate, margins entire or distally serrulate. <b>Racemes</b> elongated in fruit; rachis puberulent, trichomes curved, cylindrical. <b>Fruiting</b> pedicels divaricate to horizontal, slightly recurved, (terete), 2–4(–5.5) × 0.15–0.2 mm, densely puberulent throughout. <b>Flowers</b>: sepals oblong, 0.6–0.9 × 0.3–0.4 mm; petals (absent or rudimentary), white, oblanceolate, 0.3–0.6 × 0.1–0.2 mm, claw absent; stamens 2, median; filaments 0.6–0.7 mm; anthers 0.1–0.2 mm. <b>Fruits</b> elliptic, 2.4–2.8 × 1.6–2 mm, apically winged, apical notch 0.2–0.3 mm deep; valves thin, smooth, not veined, puberulent (at least along margin); style obsolete or to 0.1 mm, included in apical notch. <b>Seeds</b> oblong, 1.3–1.4 × 0.7–0.8 mm.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun–Jul.
|habitat=Dry open woods, dry grounds
|distribution=Colo.;Idaho;Wyo.
|discussion=<p><i>Lepidium paysonii</i> is known in Idaho from Bear Lake County, and in Wyoming from Park and Sublette counties.</p><!--
--><p>Placing <i>Lepidium paysonii</i> in the synonymy of <i>L. densiflorum</i> var. pubicarpum, N. H. Holmgren (2005b) depended on the presence in both taxa of minute papillae at the fruit valve margin. However, <i>L. paysonii</i> is a perennial with elliptic fruits widest at the middle, curved rachis trichomes, and fruiting pedicels puberulent throughout. By contrast, <i>L. densiflorum</i> is a biennial or annual with obovate fruits widest beyond the middle, straight rachis trichomes, and fruiting pedicels usually puberulent adaxially, rarely glabrate; in our opinion, the two species are not closely related.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Lepidium paysonii
|author=
|authority=Rollins
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Brassicaceae
|phenology=Flowering Jun–Jul.
|habitat=Dry open woods, dry grounds
|distribution=Colo.;Idaho;Wyo.
|reference=None
|publication title=Cruciferae Continental N. Amer.,
|publication year=1993
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V7/V7_956.xml
|tribe=Brassicaceae tribe Lepidieae
|genus=Lepidium
|species=Lepidium paysonii
}}<!--

-->[[Category:Treatment]][[Category:Lepidium]]