View source for Lepidium draba

{{Treatment/ID
|accepted_name=Lepidium draba
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 645. 1753
|year=1753
}}
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}{{Treatment/ID/Special_status
|code=I
|label=Introduced
}}{{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Cardaria draba
|authority=(Linnaeus) Desvaux
|rank=species
}} {{Treatment/ID/Synonym
|name=Cochlearia draba
|authority=(Linnaeus) Linnaeus
|rank=species
}} {{Treatment/ID/Synonym
|name=Nasturtium draba
|authority=(Linnaeus) Crantz
|rank=species
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Lepidieae;Lepidium;Lepidium draba
|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 draba]]</div></div>
|volume=Volume 7
|mention_page=page 570, 572
|treatment_page=page 581
}}<!--

--><span class="statement" id="st-undefined" data-properties="">Perennials; (rhizomatous); hirsute or glabrate. <b>Stems</b> often simple from base, erect or decumbent basally, branched (several) distally, (0.8–)2–6.5(–9) dm. <b>Basal</b> leaves (early withered); not rosulate; petiole 1–4 cm; blade obovate, spatulate, or ovate, (1.5–)3–10(–15) cm × 10–40 mm, margins sinuate to dentate or entire. <b>Cauline</b> leaves sessile; blade ovate, elliptic, oblong, or lanceolate, oblanceolate, or obovate, (1–)3–9(–15) cm × (5–)10–20(–50) mm, base sagittate-amplexicaul or auriculate, margins dentate or entire, (surfaces pubescent or glabrous). <b>Racemes</b> (corymbose panicles), slightly or considerably elongated in fruit; rachis glabrous or puberulent, trichomes straight or curved, cylindrical. <b>Fruiting</b> pedicels ascending to horizontal, straight, (terete), 5–10(–15) × 0.2–0.3 mm, glabrous or sparsely puberulent adaxially. <b>Flowers</b>: sepals oblong to ovate, 1.5–2.5 × 0.7–1.2 mm; petals white, obovate, (2.5–)3–4(–4.5) × (1–)1.3–2(–2.2) mm, claw 1–1.7 mm; stamens 6; filaments 2–3 mm, (glabrous); anthers 0.4–0.5 mm. <b>Fruits</b> (indehiscent), cordate to subreniform, (2–)2.5–3.7(–4.3) × (3.2–)3.7–5(–5.6) mm, apically (obtuse to subacute), not winged, apical notch absent; valves thin, smooth, reticulate-veined, glabrous; style (0.6–)1–1.8(–2) mm. <b>Seeds</b> ovate, 1.5–2.3 × 1–1.3 mm. <b>2n</b> = 32, 64.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–Aug.
|habitat=Mountain slopes, roadsides, fields, agricultural lands, stream sides, disturbed grounds, pastures, waste areas
|elevation=0-3300 m
|distribution=Alta.;B.C.;Man.;N.S.;Ont.;Sask.;Ariz.;Calif.;Colo.;Conn.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.Dak.;Utah;Wash.;Wyo.;s Europe;sw Asia;introduced also in Mexico (Distrito Federal);South America;s Africa;Australia.
|introduced=true
|discussion=<p>Although <i>Lepidium draba</i> is poorly established and known from old collections in the eastern part of the United States, it has become a noxious weed in several western states.</p><!--
--><p><i>Lepidium draba</i> and its nearest relatives, <i>L. appelianum</i> and <i>L. chalepense</i>, form a monophyletic clade most closely related to <i>L. campestre</i> (K. Mummenhoff et al. 2001). A. Thellung (1906) and C. L. Hitchcock (1936) correctly placed <i>L. draba</i> in <i>Lepidium</i>, as did Linnaeus. The recognition of the first three species in Cardaria and the maintenance of their nearest relative, <i>L. campestre</i>, in <i>Lepidium</i> do not make any sense on both phylogenetic and taxonomic grounds.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Lepidium draba
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Cardaria draba;Cochlearia draba;Nasturtium draba
|basionyms=
|family=Brassicaceae
|phenology=Flowering Apr–Aug.
|habitat=Mountain slopes, roadsides, fields, agricultural lands, stream sides, disturbed grounds, pastures, waste areas
|illustrator=Barbara Alongi
|illustration copyright=Flora of North America Association
|elevation=0-3300 m
|distribution=Alta.;B.C.;Man.;N.S.;Ont.;Sask.;Ariz.;Calif.;Colo.;Conn.;D.C.;Idaho;Ill.;Ind.;Iowa;Kans.;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.J.;N.Mex.;N.Y.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.Dak.;Utah;Wash.;Wyo.;s Europe;sw Asia;introduced also in Mexico (Distrito Federal);South America;s Africa;Australia.
|introduced=true
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=Weedy;Introduced;Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_936.xml
|tribe=Brassicaceae tribe Lepidieae
|genus=Lepidium
|species=Lepidium draba
}}<!--

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