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Vascular Plants of California
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Key to Crepis

View taxon page for Crepis

(For a list of species in Crepis, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Annual or biennial (perennial herb); base of plant generally not strongly swollen or woody (except some Crepis vesicaria subsp. taraxacifolia); taproot shallow,  roots present

2. Fruit ± beakless

3. Involucre 5–8 mm; inner phyllaries with double row of ± black stalked glands along abaxial midrib, glabrous adaxially; fruit ± brown-yellow ..... C. capillaris

3' Involucre 6–9 mm; inner phyllaries minutely  to short-hairy abaxially, minutely hairy adaxially; fruit ± dark red- or purple-brown ..... C. tectorum

2' Fruit, at least inner, distinctly beaked

4. Fruits of 2 forms, outer beakless, inner finely beaked ..... C. vesicaria subsp. taraxacifolia (2)

4' Fruits all similar, beaked

5. Stem coarsely long- or short-hairy; cauline   , sharply lobed; phyllaries not fruit ± red-brown, beak 1–2 mm ..... C. setosa

5' Stem short-hairy or  to ± glabrous, not coarsely long-hairy; cauline leaves , clasping but not  and sharply lobed; phyllaries  at maturity; fruit pale brown to yellow, beak 2–5 mm ..... C. vesicaria subsp. taraxacifolia (2)

1' Perennial herb; base of plant swollen and ± woodytaproot (or creeping rhizome) well developed, deep

6. Plant entirely glabrous (leaves occasionally  in Crepis bursifolia)

7. Stem flexible, arched or , cymosely branched distallyleaves generally pinnately divided; heads 2–3; beak of fruit ± 2 × body; disturbed areas ..... [C. bursifolia]

7' Stem ±  or , generally branched; leaves generally round to spoon- or fiddle-shaped,  or few-toothed to shallowly lobed; heads 5–10(100); fruit  but not beaked; alpine ..... C. nana

6' Plant generally ± hairy (Crepis runcinata sometimes glabrous)

8. Leaves generally , sometimes pinnately lobed ..... C. runcinata

9. Leaf green, teeth prominently white-tipped; inner phyllaries widely  or  to  ..... subsp. andersonii

9' Leaf glaucousteeth not prominently white-tipped; inner phyllaries  to narrowly  ..... subsp. hallii

8' Leaves generally pinnately lobed or divided or sharply 

10. Herbage and involucres coarsely hairy, hairs 1–3 mm; phyllaries  or long-acuminate

11. Herbage and involucres densely coarse-hairy and stalked-glandular; inner phyllaries long-acuminate ..... C. monticola

11' Herbage and involucres bristly and ± short-tomentose, generally not stalked-glandular; inner phyllaries  (see 13. for varieties) ..... C. modocensis (2)

10' Herbage and involucres ± short-tomentose, hairs or bristles generally < 1 mm; phyllaries 

12. Inner phyllaries with ± black, ± white, or green bristlesfruit ± dark green to deep red, dark brown or ± black, weakly ribbed or striate ..... C. modocensis (2)

13. Stem branched near or distal to middle;  11–16 mm; pappus 5–10 mm ..... subsp. modocensis

13' Stem low, branched near base;  13–21 mm; pappus 9–13 mm ..... subsp. subacaulis

12' Inner phyllaries generally glabrous, or less often short-stalked-glandular or with few black bristlesfruit ± yellow, light to dark brown, red-brown, or deep green, distinctly ribbed

14. Largest heads with 5–8 inner phyllaries; flowers generally 5–10

15. Cauline leaves well developed; heads 30–70(100+) in compound flat-topped cluster; inner phyllaries generally glabrous or occasionally evenly , not strongly keeledfruit ± yellow or yellow-brown ..... C. acuminata

15' Cauline leaves much reducedheads 7–10(30) in small cyme-like cluster; inner phyllaries conspicuously white-tomentose near margins, bases becoming strongly keeled, midrib generally glabrousfruit red-brown ..... C. pleurocarpa

14' Largest heads with 7–14 inner phyllaries; flowers 6–40

16. Plant 25–60 cm; heads generally > 20, in large ± flat-topped or panicle-like cluster;  3–5 mm diam; flowers 7–12 ..... C. intermedia

16' Plant 5–40 cm; heads generally < 20 in cyme-like or panicle-like cluster;  5–15 mm diam; flowers 10–40

17. Herbage green, stalked-glandular;  midribs often conspicuously red-purple when fresh; inner phyllaries conspicuously stalked-glandular (glabrous) ..... C. bakeri

18. Involucre narrowly  to ± obconic, 18–21 mm in fruit; outer phyllaries , longest << inner; pappus > fruit ..... subsp. idahoensis

18' Involucre widely , 13–20 mm in fruit; outer phyllaries , longest ± 1/2 inner; pappus ± <= fruit

19. Involucre 16–20 mm in fruit; fruit 8–10.5 mm, tip slightly pappus 9–10.5 mm ..... subsp. bakeri

19' Involucre 13–17 mm in fruit; fruit 6–9 mm, tip strongly pappus 6–9 mm ..... subsp. cusickii

17' Herbage ± gray-tomentose, stalked-glandular or not;  midribs not red-purple, inconspicuous; phyllaries stalked-glandular or not ..... C. occidentalis

20. Inner phyllaries with at least some stalked glands

21. Inner phyllaries, and distal cauline leaves stalked-glandular and with large dark or black bristles; largest heads with 8 inner phyllaries and 12–14 flowers ..... subsp. costata

21' Inner phyllaries and distal cauline leaves stalked-glandular, but lacking large dark or black glandular bristles; largest heads with 10–13 inner phyllaries and 18–30 flowers ..... subsp. occidentalis

20' Inner phyllaries glandless, or if with a few stalked glands then  with 8 phyllaries

22. Stem generally low, 5–20 cm, branched near base; inner phyllaries 8–12; leaves deeply pinnately lobed,  narrow, remote, , few-toothed ..... subsp. conjuncta

22' Stem well developed, 10–40 cm, with definite primary axis below heads; inner phyllaries generally 8; leaves strongly  or pinnately lobed,  closely spaced ..... subsp. pumila

 

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Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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