CICHORIACEAE. 



VOL. III. 



2. Crepis glauca (Nutt.) T. & G. Glaucous 

 Hawksbeard. Fig. 4087. 



Crepidium glaucum Nutt. Trans. Am. Phil. Soc. (II.) 

 7:436. 1841. 



Crepis glauca T. & G. Fl. N. A. 2 : 488. 1843. 



Perennial ; scapose, or rarely with I or 2 leaves 

 on the stem, i-2i high, glabrous and glaucous 

 throughout. Basal leaves spatulate, oblanceolate, 

 or obovate, acute or obtuse at the apex, gradually 

 narrowed into margined petioles, entire, dentate, 

 or pinnatifid, 2'-6' long, '-i' wide; heads not 

 numerous, long-peduncled, 6"-i2" broad; pedun- 

 cles glabrous ; involucre campanulate, its principal 

 bracts lanceolate, acute, the outer ones very short, 

 ovate, appressed ; achenes oblong-cylindric, slightly 

 narrowed above, strongly lo-ribbed. 



In moist and saline soil, Nebraska to Saskatche- 

 wan, Utah and Nevada. July-Aug. 



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 perple.rans 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 i or 2 small leaves, i-3 

 high. Basal leaves spatulate, obovate, or oblong, 

 obtuse or acute, entire, repand, dentate, or rarely 

 runcinate-pinnatifid, 2'-6' long, i'-ii' wide; heads 

 several, long-peduncled, nearly i' broad; pedun- 

 cles glabrous or glandular-pubescent; involucre 

 campanulate, pubescent or glandular, its principal 

 bracts linear-lanceolate, acute, outer ones short, 

 lanceolate, appressed ; achenes linear-oblong, some- 

 what narrowed above, lo-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 Ne- 

 braska. 



4. Crepis tectorum L. Narrow-leaved Hawks- 

 beard. Fig. 4089. 



Crepis tectorum L. Sp. PI. 807. 1753. 



Annual ; stem slender; puberulent or pubescent, 

 leafy, branched, i-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"-io" broad ; 

 involucre narrowly campanulate, canescent or pubes- 

 cent, 3"-s" high, its principal bracts lanceolate, acu- 

 minate, 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. 



