Crepis capillaris
crépis capillaire, smooth hawk's-beard
1(–6+), erect to ± procumbent, usually simple (usually with single stout leader, sometimes multiple with slender laterals), hispid proximally or throughout.
basal and cauline; petiolate (petiole bases clasping);
blades lanceolate or oblanceolate, runcinate or lyrate, 5–30 × 1–4.5 cm, margins pinnately divided to sharply dentate (lobes remote, unequal), apices obtuse or acute, mucronate, faces glabrous or sparsely hispid (hairs yellow; proximal cauline auriculate and clasping).
cylindric to turbinate, 5–8 × 3–6 mm.
20–60;
corollas deep yellow (reddish abaxially), 8–12 mm (hairy).
8–16, lanceolate, 6–7 mm (margins scarious), apices acute, abaxial faces stipitate-glandular and glandular setose (setae black, usually in 2 rows), adaxial glabrous.
of 8, linear, tomentulose or stipitate-glandular bractlets 2–4 mm.
10–15(–30+), in corymbiform arrays.
brownish yellow, fusiform, 1.5–2.5 mm, apices narrowed (not beaked), ribs 10 (glabrous or scabrous);
pappi white (fluffy), 3–4 mm (scarcely surpassing phyllaries).
= 6.
Crepis capillaris
Crepis capillaris is recognized by its shallow root system, dense rosettes of coarsely dentate or pinnately lobed leaves, erect slender stems, auriculate-based cauline leaves, relatively small heads, phyllaries with double rows of black setae, and fluffy white pappi. It is weedy and can become a serious lawn pest. It is one of only three species of Crepis with 2n = 6; E. B. Babcock (1947) considered it to be advanced in the genus.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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