Crepis vesicaria
Crepis atribarba
beak hawk's-beard, weedy hawksbeard
dark hawksbeard, slender hawksbeard
1, erect to arcuate or decumbent (green or purple proximally), usually much branched, glabrate to hispid and/or tomentose, sometimes sparsely setose (setae black).
1–2, erect, slender, usually branched distal to middles, glabrous or tomentulose.
basal and cauline;
petiolate (bases clasping);
blades oblanceolate to ovate, often runcinate, 10–35 × 2–8 cm, margins pinnately lobed to toothed (terminal lobes relatively large), apices obtuse or acute, faces usually hirsute (hairs sometimes only on veins) or glabrous (cauline sessile, bases auriculate, clasping, margins ± toothed).
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.
cylindro-campanulate (becoming turbinate or urceolate in fruit), 5–14 × 5–6 mm.
cylindro-campanulate, 10–12 × 4–7 mm.
50–70;
corollas yellow (reddish abaxially), 6–15 mm.
6–35;
corollas yellow, 10–18 mm.
7–16, (reflexed at maturity) lanceolate, 10–12 mm, (margins green to yellowish), apices obtuse or acute (ciliate), abaxial faces tomentose and often stipitate-glandular, adaxial with fine, appressed hairs.
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.
of 5–12, ovate to linear-lanceolate, glabrous bractlets 3–4 mm (reflexed in fruit, scarious).
of 5–10, narrowly triangular to lanceolate, tomentose bractlets 1–3 mm.
10–20, in lax, corymbiform arrays.
3–30, in corymbiform arrays.
(monomorphic or dimorphic) pale brown or yellowish, fusiform, 4–9 mm, outer wider with apices attenuate (not beaked), inner gradually tapered, beaked (beaks 2–5 mm, ± equal to bodies), ribs 10 (narrow);
pappi white (fine, soft), 3–6 mm.
dark or blackish green, subcylindric, 3–10 mm, apices tapered, not beaked, ribs 12–15 (distinct);
pappi whitish, 5–9 mm.
= 8, 16.
= 22, 33, 44, 55, 88.
Crepis vesicaria
Crepis atribarba
Native to the Mediterranean region of western Europe, Crepis vesicaria is recognized by its annual or biennial habit, pinnately lobed leaves, reflexed calyculi, tomentose and glandular phyllaries, and slender, long-beaked inner cypselae. It is polymorphic; subspecies are recognized in Europe. E. B. Babcock (1947) identified the North American plants as subsp. taraxaciflora (Thuiller) Thellung, which some Europeans (T. G. Tutin et al. 1964–1980, vol. 4) have listed as a synonym of subsp. haenseleri (Boissier ex de Candolle) P. D. Sell.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
BC
OR
Flora NW
Go Botany
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
WA
CalFlora
