342 
CARDUACEAE. 
3. Chrysothamnus Bigelovii (A. Gray) Greene. ( Bigelovia Bigelovii A. 
Gray) On dry plains from Colo, and Utah to Tex. and N. M.—Alt. about 
7000 ft.—Huerfano Co.; mesas, La Veta; Buena Vista. 
4. Chrysothamnus Parryi (A. Gray) Greene. ( Bigelovia Parryi A. Gray) 
On hills and in dry valleys from Wyo. to Colo.—Alt. 7500-10,000 ft.—Gray’s 
Peak; Georgetown; South Park; near Empire; Lake City; southeast of 
Ouray; North Fork; Pitkin; mesa, Yampa; Parlin; Cottonwood Lake; Twin 
Lakes; Steamboat Springs; Marshall Pass; Cerro Summit; Cumbres; Mt. 
Harvard; on Grizzly Creek; near Empire; Middle Park; Black Canon of the 
Gunnison; Little Muddy, Gunnison Co.; Breckenridge; Hayden. 
5. Chrysothamnus Newberryi Rydb. On dry hills of N. M. and Colo.— 
Mesa Verde. 
6. Chrysothamnus Howardi (Parry) Greene. ( Bigelovia Howardii A. 
Gray) On dry hills from Neb. and Wyo. to Colo.—Middle Park; Greene, 
North Park; near Walden. 
7. Chrysothamnus Greenei (A. Gray) Greene. ( Bigelovia Greenei A. Gray; 
C. scoparius Rydb.) On plains of Colo.—Alt. 5000-7500 ft.—Huerfano Co.; 
La Veta; Hugo. 
8. Chrysothamnus filifolius Rydb. On plains of Colo.—Antonito; Granite. 
9. Chrysothamnus collinus Greene. On hills of Wyo. and Colo.—West- 
cliffe. 
10. Chrysothamnus wyomingensis A. Nelson. On dry plains of Wyo. and 
Colo.—South Park at Jefferson. 
11. Chrysothamnus virens Greene. Plains of southern Colo.—Pike’s Peak; 
Canon City. 
12. Chrysothamnus graveolens (Nutt.) Greene. ( Bigelovia graveolens A. 
Gray) In canons, on “bad-lands,” and dry hills from Neb. and Mont, to 
N. M. and Utah.—Alt. 4000-8000 ft.—New Windsor; Golden; Grand Junc¬ 
tion; near Denver; Grizzly Creek; Canon City; Idaho Springs; Egeria Park; 
Breckenridge; Ft. Collins; Boulder; Delta; Jefferson Co. 
13. Chrysothamnus patens Rydb. On dry plains and hills in Colo.—Alt. 
4600-7500 ft.—Grand Junction; Alamosa; Manitou; Iola. 
14. Chrysothamnus pinifolius Greene. On dry hills and plains in Colo.— 
Alt. 7000-13,000 ft.—Gunnison; Doyles; Mt. Abram. 
15. Chrysothamnus confinis Greene. On arid plains of Colo, and N. M.— 
Alt. 4000-8000 ft.—Grizzly Creek; Huerfano Valley, near Gardner. 
16. Chrysothamnus plattensis Greene. On plains of Wyo. and Colo.—Alt. 
4000-5000 ft.—Denver; New Windsor; near Hebron; Ft. Collins. 
17. Chrysothamnus pulcherrimus A. Nels. On plains from Mont, to Colo. 
—North Park; Pagosa Springs; near Hebron; Grand River, near State 
Bridge; Trimble Springs; Poudre Canon; forks of Poudre and Big South; 
Gypsum. 
18. Chrysothamnus frigidus Greene. On plains from Ass. to Colo.—Alt. 
8000 ft.—Buena Vista. 
19. Chrysothamnus elegans Greene. On plains of Colo.—Alt. 7500-8500 
ft.—Gunnison; Doyles; South Park. 
20. Chrysothamnus linifolius Greene. On dry plains of Wyo. and Colo.— 
Alt. 4000-5000 ft.—Deer Run; Grand Junction; Hotchkiss, Delta Co.; Olathe. 
