OregonFlora: Crepis capillaris vs. Crepis bursifolia

	Crepis capillaris	Crepis bursifolia
	smooth hawksbeard
Habit	Plants annual or biennial, 10–120 cm; taproots usually slender, sometimes stout.
Stems	erect or ascending; simple or branched, glabrous or puberulent near base or throughout.
Basal leaves	rarely absent, narrowly to broadly lanceolate or oblanceolate, 5–30 cm; margins entire to toothed or lobed; lobes deltate to linear; tips obtuse or acute; surfaces glabrous or hispidulous, petiolate.
Cauline leaves	similar to basal, reduced distally; upper sessile, auriculate-clasping.
Inflorescences	open, not flat-topped.
Involucres	cylindric or campanulate, 5–8 mm.
Florets	20–60; ligules 6–12 mm.
Phyllaries	outer linear; inner 8–16, lanceolate, minutely tomentose and usually with short setose, glandular hairs.
Fruits	narrowed at tips, 1.5–2.5 mm; yellowish or light brownish; ~10-ribbed.
Heads	10–15(35).
2n	=6.

	Crepis capillaris	Crepis bursifolia
Distribution	[WildflowerSearch map] [BONAP county map]	[BONAP county map]
Discussion	Disturbed areas, lawns, gardens, meadows, roadsides, shrublands, forests, clearcuts. Flowering May–Sep. 0–1200 m. Casc, CR, Ecas, Est, Sisk, WV. CA, ID, NV, WA; scattered nearly worldwide. Exotic. The growth form and vegetative morphology of this weedy species are much affected by conditions of the habitat.
Source	Flora of Oregon, volume 2, page 236 Kenton Chambers
Sibling taxa	C. acuminata, C. atribarba, C. bakeri, C. barbigera, C. intermedia, C. modocensis, C. monticola, C. nicaeensis, C. occidentalis, C. pleurocarpa, C. pulchra, C. runcinata, C. setosa, C. tectorum, C. vesicaria	C. acuminata, C. atribarba, C. bakeri, C. barbigera, C. capillaris, C. intermedia, C. modocensis, C. monticola, C. nicaeensis, C. occidentalis, C. pleurocarpa, C. pulchra, C. runcinata, C. setosa, C. tectorum, C. vesicaria
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Crepis capillaris

Crepis bursifolia

smooth hawksbeard

Habit

Plants annual or biennial, 10–120 cm; taproots usually slender, sometimes stout.

Stems

erect or ascending; simple or branched, glabrous or puberulent near base or throughout.

Basal leaves

rarely absent, narrowly to broadly lanceolate or oblanceolate, 5–30 cm;

margins entire to toothed or lobed;

lobes deltate to linear;

tips obtuse or acute;

surfaces glabrous or hispidulous, petiolate.

Cauline leaves

similar to basal, reduced distally; upper sessile, auriculate-clasping.

Inflorescences

open, not flat-topped.

Involucres

cylindric or campanulate, 5–8 mm.

Florets

20–60;

ligules 6–12 mm.

Phyllaries

outer linear; inner 8–16, lanceolate, minutely tomentose and usually with short setose, glandular hairs.

Fruits

narrowed at tips, 1.5–2.5 mm; yellowish or light brownish; ~10-ribbed.

Heads

10–15(35).

=6.

Crepis capillaris

Crepis bursifolia

Distribution

[WildflowerSearch map]

[BONAP county map]

Discussion

Disturbed areas, lawns, gardens, meadows, roadsides, shrublands, forests, clearcuts. Flowering May–Sep. 0–1200 m. Casc, CR, Ecas, Est, Sisk, WV. CA, ID, NV, WA; scattered nearly worldwide. Exotic.

The growth form and vegetative morphology of this weedy species are much affected by conditions of the habitat.

Source

Flora of Oregon, volume 2, page 236
Kenton Chambers

Sibling taxa