CICHORIACEAE. 
405 
Involucres and peduncles hirsute or glandular or both. 
Leaf-blades oblanceolate or oblong to linear-oblanceolate. 
Leaves long-petioled; petioles one-half as long to fully as long as the 
blades, not winged. 
Blades of the basal leaves broadly oblanceolate; stem usually with 1-2 
leaves; involucres over 1 cm. high. 3. C. petiolata. 
Blades of the basal leaves narrowly linear-lanceolate or linear-oblan¬ 
ceolate ; stem scapiform; involucres less than 1 cm. high. 
4. C. glaucella. 
Leaves subsessile or with short, winged petioles. 
Leaves glabrous; involucres with a few short hairs. 
5. C. perplexa. 
Leaves and involucres hairy. 6. C. runcinata. 
Leaf-blades obovate; involucres and peduncles densely glandular hispid 
with long hairs. 
Involucres over 1 cm. high; leaves hairy, 1.5-2 dm. long. 
7. C. rip aria. 
Involucres 1 cm. high or less; leaves glabrous or nearly so. 
8. C. denticulata. 
Plant more or less canescent or furfurascent, especially the leaves. 
Involucres glabrous, 5-7-flowered. 9. C. acuminata. 
Involucres canescent. 
Involucres and peduncles without black hairs. 
Principal bracts of the involucres 5-8; flowers of the same number. 
Blade proper broadly lanceolate; lobes usually directed downward. 
10. C. intermedia. 
Blade proper narrowly lanceolate to almost linear; lobes curved up¬ 
wards. 11. C. angustata. 
Principal bracts of the involucres 9-14; flowers 10-20; plant low. 
12. C. pumila. 
Involucres and peduncles with some black hairs intermixed with the to- 
mentum; principal bracts 9-10. 
Hairs glandular. 13. C. occidentals. 
Hairs not glandular. 14. C. scopulorum. 
Achenes with a more or less dilated disk bearing the deciduous pappus; plant 
dwarf, less than 1 dm. high. 15. C. nana. 
1. Crepis tomentulosa Rydb. In the mountains near Pike’s Peak, Colo.— 
Alt. nearly 10,000 ft.—Ruxton Dell. 
2. Crepis glauca (Nutt.) T. & G. (C. lancifolia Greene ?) In valleys from 
Mont, to Colo, and Nev.—Alt. 4500-10,000 ft.—Clear Creek, below George¬ 
town; Ft. Collins; Doyle’s; Garland; Wahatoya Creek; Eagle River. 
3. Crepis petiolata Rydb. In the mountains of Wyo. and Colo.—Alt. 7000- 
9000 ft.—Along Bear River, five miles east of Hayden; Georgetown. 
4. Crepis glaucella Rydb. In wet meadows from Mont, to Colo.—Alt. about 
7500 ft. — Wahatoya Creek. 
5. Crepis perplexa Rydb. In valleys from N. D. and Alb. to Neb. and Colo. 
—Alt. 5000-9000 ft.—Sterling, Logan Co.; Garland; Parlin; Sangre de Cristo 
Creek; South Park; Pagosa Springs; Empire; Bosworth’s range; La Porte; 
Georgetown; Moon’s ranch; Table Rock; Beaver Creek; Tobe Miller’s ranch; 
Walden. 
6 . Crepis runcinata T. & G. In valleys from N. D. and Alb. to Colo.— 
Westcliffe. 
7. Crepis riparia A. Nels. On river banks of Neb. and Colo, and Utah.— 
Yampa; Steamboat Springs. 
8 . Crepis denticulata Rydb. In the mountains of Colo., Wyo. and Utah.— 
Near Lake John, North Park. 
