Northern Prairie Wildlife Research Center


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Aquatic and Wetland Vascular Plants of the Northern Great Plains

49. Asteraceae, the Aster Family

7. Crepis L. -- Hawk's-beard

1. Crepis runcinata (James) T. & G.

Milky-juiced perennial from 1-several strong roots, the principal leaves in a basal rosette (appearing like those of a dandelion); stems 1-3, scapose or nearly so, (1.5)2.5-5(7) dm tall, glabrous or sparsely hairy, the cauline leaves much reduced and bractlike. Basal leaves oblanceolate to elliptic or obovate, narrowed to a petiolate base, 4-15(25) cm long, 1.2-4(8) cm wide, obtuse to rounded, entire to toothed or runcinate. Heads ligulate, usually 1-several, rarely to 20, 1-2(3) cm across, mostly 20- to 50-flowered, sometimes with white tomentum on the outside of the receptacle, often glandular-pubescent on the involucre and onto the peduncle; involucre cylindrical to campanulate, 8-13 mm high, the bracts not numerous, linear, in 2 series, the outer ones few and reduced; receptacle naked; ligules yellow, 9-18 mm long. Achenes reddish-brown, terete, 4-5.5 mm long; pappus of numerous white capillary bristles. Jun--Jul. Wet meadows, shores and prairie swales, especially where alkaline; frequent except in e NE; (MN and Man. to WA, s to NE, NM, CA and n Mex.).
GIF- Distribution Map

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Menlo Park, CA [caww55]