View source for Crepis atribarba

{{Treatment/ID
|accepted_name=Crepis atribarba
|accepted_authority=A. Heller
|publications={{Treatment/Publication
|title=Bull. Torrey Bot. Club
|place=26: 314. 1899
|year=1899
}}
|common_names=Slender or dark hawksbeard
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Crepis exilis
|authority=Osterhout
}} {{Treatment/ID/Synonym
|name=Crepis exilis subsp. originalis
|authority=Babcock & Stebbins
}} {{Treatment/ID/Synonym
|name=Crepis occidentalis var. gracilis
|authority=D. C. Eaton
}}
|hierarchy=Asteraceae;Asteraceae tribe Cichorieae;Crepis;Crepis atribarba
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Asteraceae]]</div><div class="higher-taxon"><small>tribe</small>[[Asteraceae tribe Cichorieae]]</div><div class="higher-taxon"><small>genus</small>[[Crepis]]</div><div class="higher-taxon"><small>species</small>[[Crepis atribarba]]</div></div>
|volume=Volume 19
|mention_page=page 224, 227, 229
|treatment_page=page 225
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Perennials,</b> 15–70 cm (taproots slender, caudices swollen, often covered by old leaf bases). <b>Stems</b> 1–2, erect, slender, usually branched distal to middles, glabrous or tomentulose. <b>Leaves</b> basal and cauline; petiolate; blades lanceolate to linear, 10–35 × 0.5–6 cm, margins deeply pinnately lobed (lobes narrowly lanceolate or linear, usually entire or toothed), apices acuminate, faces tomentulose to glabrate. <b>Heads</b> 3–30, in corymbiform arrays. <b>Calyculi</b> of 5–10, narrowly triangular to lanceolate, tomentose bractlets 1–3 mm. <b>Involucres</b> cylindro-campanulate, 10–12 × 4–7 mm. <b>Phyllaries</b> 8–13, lanceolate, 10–12 mm (margins yellow, scarious, eciliate), apices acute, abaxial faces usually tomentulose, sometimes glabrous, often with coarse, green or blackish setae, adaxial glabrous or with fine, appressed hairs. <b>Florets</b> 6–35; corollas yellow, 10–18 mm. <b>Cypselae</b> dark or blackish green, subcylindric, 3–10 mm, apices tapered, not beaked, ribs 12–15 (distinct); pappi whitish, 5–9 mm. <b>2n</b> = 22, 33, 44, 55, 88.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Jul.
|habitat=Dry, open, grassy places, sagebrush slopes, pine forests, gravelly stream banks
|elevation=200–3000 m
|distribution=Alta.;B.C.;Sask.;Colo.;Idaho;Mont.;Nebr.;Nev.;Oreg.;Utah;Wash.;Wyo.
|discussion=<p><i>Crepis atribarba</i> is generally recognized by the deeply pinnately lobed leaves with linear lobes, fine tomentulose indument on stems and leaves, setose phyllaries, and dark green, strongly ribbed cypselae. It is a variable mixture that includes polyploid, apomictic forms and hybrids with <i>C. acuminata</i> and other species. The typical form is recognized by its short stature, narrow pinnately lobed, tomentulose leaves, stems with 3–10 heads, and phyllaries with scattered, black, eglandular setae. Larger, more robust forms with stems 30–70 cm, 10–30+ heads, narrower involucres, and few or no black setae have been recognized as subsp. originalis. The latter was considered by E. B. Babcock (1947) to represent the original diploid form of the species; it is difficult to distinguish in practice.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Crepis atribarba
|author=
|authority=A. Heller
|rank=species
|parent rank=genus
|synonyms=Crepis exilis;Crepis exilis subsp. originalis;Crepis occidentalis var. gracilis
|basionyms=
|family=Asteraceae
|phenology=Flowering May–Jul.
|habitat=Dry, open, grassy places, sagebrush slopes, pine forests, gravelly stream banks
|elevation=200–3000 m
|distribution=Alta.;B.C.;Sask.;Colo.;Idaho;Mont.;Nebr.;Nev.;Oreg.;Utah;Wash.;Wyo.
|reference=None
|publication title=Bull. Torrey Bot. Club
|publication year=1899
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V19-20-21/V19_276.xml
|tribe=Asteraceae tribe Cichorieae
|genus=Crepis
|species=Crepis atribarba
}}<!--

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