408 
CICHORIACEAE. 
Involucres 1—1.5 cm. in diameter; plant tall and stout, scarcely glaucous. 
15. A. elata. 
Involucres less than 1 cm. in diameter; plant slender, glaucous. 
21. A. arizonica. 
Involucres of two distinct sets of bracts ; the inner narrowly linear, 2 to 3 
times as long as.the ovate or oval outer ones; beak 3-4 times as long as 
the body of the achenes. 22. A. rostrata. 
1. Agoseris pubescens Rydb. On hillsides of Wyo. and Colo.—Platte 
Canon; Marshall Pass. 
2. Agoseris maculata Rydb. In the mountains of Colo.—Alt. 10,000-13,000 
ft.—Silver Plume; Tennessee Pass. 
3. Agoseris attenuata Rydb. In the mountains of Colo.—Alt. near 10,000 
ft.—Mountains west of North Park. 
4. Agoseris pumila (Nutt.) Rydb. ( Troximon pumilum Nutt.) On hills 
from Mont, to Colo.—Alt. up to 12,300 ft.—Red Mountain; Silver Plume. 
5. Agoseris scorzoneraefolia (Schrad.) Greene. ( Troximon glaucum dasy- 
cephalum T. & G.) On hillsides from Mont, and Alb. to Colo.—Alt. 4000- 
8000 ft.—Divide road to Steamboat Springs; Gunnison; Four-mile Hill, Routt 
Co.; Marshall Pass; Gypsum Creek Canon. 
6. Agoseris agrestis Osterh. On hills of Colo.—Alt. 7000-12,000 ft.—Estes 
Park, Larimer Co.; Ojo; butte, five miles southwest of La Veta; Berthoud 
Pass. 
7. Agoseris Leontodon Rydb. On hills from Mont, and S. D. to Colo, and 
Ariz.—Alt. 7000-10,000 ft.—Georgetown; Cripple Creek road, near Pike’s 
Peak; Van Boxle’s ranch, above Cimarron; Marshall Pass; Gunnison; Four- 
mile Hill; Walton Creek; Bear Creek. 
8. Agoseris roseata Rydb. On hills in Colo.—Bear River, twenty miles 
below Steamboat Springs. 
9. Agoseris glauca (Pursh) Greene. ( Troximon glaucum Nutt.) On 
prairies and in meadows from Sask. and Wash, to Colo, and Utah.—Alt. 
4000-10,000 ft.—Pitkin; near Teller, North Park; Stove Prairie; Bosworth’s 
ranch; Ruxton Dell; Wahatoya Creek; Mancos; mountains, Larimer Co.; 
swamp above Beaver Creek; Dolores; Elk River; Conejos River, north of 
Antonito. 
10. Agoseris parviflora (Nutt.) Dietr. ( Troximon glucum parvidorum A. 
Gray) In meadows from N. D. and Alb. to Colo.—Alt. 4000-8000 ft.— 
Chambers’ Lake; Gunnison; Parlin; Steamboat Springs; Mt. Harvard; 
Boulder. 
11. Agoseris rosea (Nutt.) Dietr. ( Troximon roseum Nutt.) In valleys 
of Colo.—Alt. about 8000 ft.—Ojo. 
12. Agoseris laciniata (Nutt.) Greene. ( Stylosanthus laciniatus Nutt.; not 
Troximon laciniatum A. Gray) In meadows and valleys from Wyo. and 
Ida. to Colo, and Calif.—Alt. 5000-9500 ft.—Minturn, Eagle Co.; Cerro Sum¬ 
mit; Los Pinos; Durango; Seven Lakes, near Pike’s Peak; Grayback mining 
camps; river bluffs north of La Veta; butte, five miles southwest of La Veta; 
headwaters of Sangre de Cristo Creek; Boulder. 
13. Agoseris montana Osterh. In the mountains of Colo, and Wyo.—Alt. 
9000-11,500 ft.—Mountains west of North Park, along road to Steamboat 
Springs; Buffalo Pass; mountainsides near Empire. 
14. Agoseris arachnoidea Rydb. In valleys of southern Colo.—Alt. 7000- 
9500 ft.—Grayback mining camps; La Veta. 
