3. Crepis Runcinata (James) T. & G. Naked Stemmed Hawksbeard

Fig. 4088

Hieracium runcinatum James in Long's Exp. 1: 453.

1823. Crepis runcinata T. & G. Fl. N. A. 2: 487. 1843. Crepis perplexans Rydb. Bull. Torr. Club 32: 134.

1906.

Perennial, similar to the preceding species, but not glaucous or scarcely so, often pubescent below; stem leafless or with 1 or 2 small leaves, 1°-3° high. Basal leaves spatulate, obovate, or oblong, Obtuse or acute, entire, repand, dentate, or rarely runcinate-pinnatifid, 2'-6' long, 1/2'-1 1/2' wide; heads several, long-peduncled, nearly 1' broad; peduncles glabrous or glandular-pubescent; involucre campanulate, pubescent or glandular, its principal bracts linear-lanceolate, acute, outer ones short, lanceolate, appressed; achenes linear-oblong, somewhat narrowed above, 10-ribbed.

In moist soil, Iowa to North Dakota, Manitoba, Alberta, Utah and Montana. June-July.

Crepis riparia A. Nelson, with broadly obovate basal leaves and larger flowers, is recorded from Nebraska.

4. Crepis Tectorum L. Narrow-Leaved Hawksbeard

Fig. 4089

Crepis tectorum L. Sp. Pl. 807. 1753.

Annua!; stem slender, puberulent or pubescent, leafy, branched, 1°-2° high. Basal leaves lanceolate, dentate, or runcinate-pinnatifid, 4'-6' long; stem leaves sessile, sometimes slightly sagittate at the base, linear, entire, dentate, or lobed, their margins revolute; heads numerous, corymbose, 6"-10" broad; involucre narrowly campanulate, canescent or pubescent, 3"-5" high, its principal bracts lanceolate, acuminate, downy within, the exterior ones linear, spreading; peduncles usually canescent; achenes 10-ribbed, narrowed above into a short beak, the ribs minutely scabrous.

In waste places and on ballast, New York and New Jersey to Connecticut, Ontario, Michigan and Nebraska. Naturalized from Europe. June-July.

5. Crepis Capillaris (L.) Wallr. Smooth Hawksbeard

Fig. 4090

Lapsana capillaris L. Sp. Pl. 812. 1753. Crepis virens L. Sp. Pl. Ed. 2, 1134. 1763. Crepis polymorpha Wallr. Sched. Crit. 426. 1822. Crepis capillaris Wallr. Fl. Hereyn. 287. 1840.

Annual; stem stout or slender, leafy, corym-bosely branched above, glabrous or somewhat hirsute below, 10-2 1/2° high. Basal leaves spatu-late, pinnatifid, or dentate, sometimes 8' long and 2' wide, narrowed into petioles; stem leaves lanceolate or oblong, clasping by a sagittate base, flat, the upper mostly very small and usually entire; heads numerous, 5"-8" broad, slender-pedun-cled; peduncles glabrous or glandular; involucre oblong, more or less pubescent or glandular, 3"-4" high, its principal bracts lanceolate, glabrous within, the outer mostly appressed; achenes 10-ribbed, smooth, slightly narrowed at both ends.

In fields and waste places, Connecticut, New York, New Jersey and Pennsylvania, and in ballast about the seaports. Also on the Pacific Coast. Adventive from Europe. July-Sept.