View source for Erysimum capitatum

{{Treatment/ID
|accepted_name=Erysimum capitatum
|accepted_authority=(Douglas ex Hooker) Greene
|publications={{Treatment/Publication
|title=Fl. Francisc.,
|place=269. 1891
|year=1891
}}
|basionyms={{Treatment/ID/Basionym
|name=Cheiranthus capitatus
|authority=Douglas ex Hooker
|rank=species
|publication_title=Fl. Bor.-Amer.
|publication_place=1: 38. 1829,
}}
|synonyms=
|hierarchy=Brassicaceae;Brassicaceae tribe Erysimeae;Erysimum;Erysimum capitatum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Erysimeae]]</div><div class="higher-taxon"><small>genus</small>[[Erysimum]]</div><div class="higher-taxon"><small>species</small>[[Erysimum capitatum]]</div></div>
|volume=Volume 7
|mention_page=page 535, 536, 538, 544
|treatment_page=page 537
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Biennials </b>or perennials; (short-lived). <b>Trichomes</b> of leaves 2–4(–7)-rayed. <b>Stems</b> erect, often branched distally, sometimes proximally, (0.5–)1.2–10(–12) dm. <b>Basal</b> leaves (often withered by flowering); blade spatulate to narrowly oblanceolate or linear, 2–18(–27) cm × 3–15(–30) mm, base attenuate, margins entire or dentate to denticulate, apex acute. <b>Cauline</b> leaves (distal) sessile; blade margins entire or denticulate. <b>Racemes</b> considerably elongated in fruit. <b>Fruiting</b> pedicels divaricate to ascending, stout or slender, narrower than fruit, 4–17(–25) mm. <b>Flowers</b>: sepals narrowly oblong, 7–14 mm, lateral pair saccate basally; petals usually orange to yellow, rarely lavender or purplish, suborbicular to obovate, 12–25(–30) × (5–)6–10(–13) mm, claw 8–16 mm, apex rounded; median filaments 9–18 mm; anthers linear, 3–4 mm. <b>Fruits</b> divaricate or ascending to erect, narrowly linear, straight or curved upward, not torulose, 3.5–11(–15) cm × 1.3–3.3 mm, 4-angled to latiseptate, not striped; valves with prominent midvein, pubescent outside, trichomes 2–5-rayed, glabrous inside; ovules (40–)54–82 per ovary; style cylindrical, usually stout, rarely slender, 0.2–2.5(–3) mm, sparsely pubescent; stigma 2-lobed, lobes as long as wide. <b>Seeds</b> oblong, 1.5–4 × 1–2 mm; winged apically or not winged. <b>2n</b> = 36.</span><!--

-->{{Treatment/Body
|distribution=Yukon;Alaska;Ariz.;Ark.;Calif.;Colo.;Idaho;Ill.;Ind.;Iowa;Mo.;Mont.;N.Mex.;Nev.;Ohio;Okla.;Oreg.;Tenn.;Tex.;Utah;Wash.;Wyo.;n Mexico.
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
--><p><i>Erysimum capitatum</i> is extremely widespread, ecologically diverse, morphologically highly variable, and nomenclaturally complex. It has been divided into infraspecific taxa; G. B. Rossbach (1958) recognized three varieties, R. A. Price (1987) eight subspecies, R. C. Rollins (1993) five varieties, Price (1993) four subspecies, and N. H. Holmgren (2005b) three varieties. The majority of these taxa were based on highly variable characters with considerable overlap, including width, margin, shape, and apex of basal leaves, fruit orientation, and development of elongated versus short caudices. Furthermore, there is a substantial degree of disagreement among these authors as to the limits of a given infraspecific taxon, its distribution, and synonymies involved. Except for two distinctive species that were previously treated as infraspecific taxa (arenicola, perenne) the vast majority of the remaining variation in <i>E. capitatum</i> is divided herein into two varieties.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Seeds winged (at least distally, rarely wing rudimentary), 2-4 × (0.8-)1-2 mm; fruits latiseptate, rarely 4-angled; petals usually orange, sometimes orange-yellow or yellow; adaxial surfaces of basal and proximalmost cauline leaf blades with mostly 3(-7)-rayed trichomes.
|[[Erysimum capitatum var. capitatum|Erysimum capitatum var. capitatum]]
|-id=key-0-1
|1
|Seeds not winged, 1.5-2(-2.4) × 0.7-1.2 mm; fruits 4-angled, rarely latiseptate; petals yellow, rarely lavender or purplish; adaxial surfaces of basal and proximalmost cauline leaf blades with mostly 2- or 3-rayed trichomes.
|[[Erysimum capitatum var. purshii|Erysimum capitatum var. purshii]]
|}
</div></div><!--

-->{{#Taxon:
name=Erysimum capitatum
|authority=(Douglas ex Hooker) Greene
|rank=species
|parent rank=genus
|synonyms=
|basionyms=Cheiranthus capitatus
|family=Brassicaceae
|distribution=Yukon;Alaska;Ariz.;Ark.;Calif.;Colo.;Idaho;Ill.;Ind.;Iowa;Mo.;Mont.;N.Mex.;Nev.;Ohio;Okla.;Oreg.;Tenn.;Tex.;Utah;Wash.;Wyo.;n Mexico.
|reference=None
|publication title=Fl. Francisc.,
|publication year=1891
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V7/V7_849.xml
|tribe=Brassicaceae tribe Erysimeae
|genus=Erysimum
|species=Erysimum capitatum
}}<!--

-->[[Category:Treatment]][[Category:Erysimum]]