Crepis atribarba
Crepis bakeri
dark hawksbeard, slender hawksbeard
Baker's hawksbeard
1–2, erect, slender, usually branched distal to middles, glabrous or tomentulose.
1–3, erect (often reddish), stout, mostly simple, sparsely to densely tomentose, often stipitate-glandular proximally.
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.
basal and cauline; petiolate (at least basal);
blades elliptic, runcinate, 8–20 × 2–5 cm, margins pinnately lobed (lobes broadly lanceolate, coarsely dentate, midribs often reddish), apices acute, faces sparsely to densely tomentose, stipitate-glandular.
cylindro-campanulate, 10–12 × 4–7 mm.
cylindric, 11–21 × 5–15 mm.
6–35;
corollas yellow, 10–18 mm.
11–40;
corollas yellow, 16–20 mm.
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.
10–14, lanceolate, 10–14 mm (margins yellowish), apices acute, abaxial faces glabrous or ± tomentose, sometimes setose and stipitate-glandular, adaxial glabrous or with fine hairs.
of 5–10, narrowly triangular to lanceolate, tomentose bractlets 1–3 mm.
of 8–10, deltate or lanceolate, tomentose bractlets 3–8 mm.
3–30, in corymbiform arrays.
2–22 (1–3 per branch), in cymiform arrays.
dark or blackish green, subcylindric, 3–10 mm, apices tapered, not beaked, ribs 12–15 (distinct);
pappi whitish, 5–9 mm.
dark or pale brown to yellowish, fusiform, 6–11 mm, apices ± tapered, ribs 10–13;
pappi whitish, 6–13 mm.
= 22, 33, 44, 55, 88.
= 22, 33, 44, 55.
Crepis atribarba
Crepis bakeri
Crepis atribarba 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 C. acuminata 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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 3 (3 in the flora).
Crepis bakeri is generally recognized by the low stature, dense rosettes of pinnately lobed leaves with coarsely dentate lobes, tomentose stems and leaves, stipitate-glandular hairs distally on stems, relatively large involucres, and densely flowered heads. It is considered closely related to C. occidentalis. Three somewhat weakly defined subspecies were recognized by E. B. Babcock (1947).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Involucres narrowly cylindric or turbinate, 18–21 mm in fruit; calyculus bractlets deltate (longest much shorter than phyllaries); pappi longer than cypselae | subsp. idahoensis |
1. Involucres broadly cylindric, 13–20 mm in fruit; calyculus bractlets lanceolate (longest ± 1/2 lengths of phyllaries); pappi ± equal to or shorter than cypselae | → 2 |
2. Involucres 16–20 mm in fruit; cypselae 8–10.5 mm, apices somewhat narrow, not strongly tapered; pappi 9–10.5 mm | subsp. bakeri |
2. Involucres 13–17 mm in fruit; cypselae 6–9 mm, apices strongly tapered; pappi 6–9 mm | subsp. cusickii |
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