CARDUACEAE. 
395 
of Clear Creek; Rabbit-Ears, Larimer Co.; summit of North Park Range, 
Routt Co. 
18. Senecio semiamplexicaulis Rydb. In meadows from Mont, and Ida. to 
Colo, and Utah.—Foot of Mt. Richtofen on the Michigan; Chambers’ Lake. 
19. Senecio rapifolius Nutt. In the mountains from S. D. and Ida. to 
Colo.—Alt. 7500-8500 ft.—Andrews’ Shetland ranch; Bosworth’s ranch, Stove 
Prairie; mountains, Larimer Co. 
20. Senecio hydrophilus Nutt. In shallow water and swampy ground from 
Mont, to Colo, and Nev.—Alt. about 8000 ft.—Grizzly Creek, North Park; 
Montrose; six miles above Wolcott; swampy places near Yampa; Upper 
Laramie River; North Fork, Larimer Co. 
21. Senecio integerrimus Nutt. In valleys from S. D. to Neb. and Colo.— 
Alt. 5000-10,000 ft.—Wolcott, Eagle Co.; mountain near Veta Pass; head¬ 
waters of Sangre de Cristo Creek; Owl Canon, Larimer Co. 
22. Senecio Hookeri A. Gray. In the mountains from Alb. and B. C. to 
Colo.—Alt. 8500-9500 ft.—Eldora to Baltimore. 
23. Senecio dispar A. Nels. In mountain valleys of Wyo. and Colo.—Steam¬ 
boat Springs. 
24. Senecio Flintii Rydb. Hills of southwestern Colo.—Exact locality not 
given. 
25. Senecio columbianus Greene. (N. lugens A. Gray, mainly; not Richard¬ 
son; Y. atriapiculatus Rydb.) In valleys from Sask. and Alaska to Minn, 
and Colo.—Alt. 5000-13,000 ft.—Hills southeast of La Veta; Calhan; Ojo; 
Tennessee Pass; Veta Mountain; Sangre de Cristo Creek; Rist Canon; 
Horsetooth Gulch; gulch west of Soldier Canon; Horsetooth Mountain; 
Gray’s Peak; headwaters of Clear Creek; Los Pinos. 
26. Senecio perplexus A. Nels. In mountain valleys from Wyo. and Ida. 
to Colo.—Alt. 8000-10,500 ft.—Robinson; Ojo; Chicken Creek, west of Mt. 
Hesperus; Mt. Harvard; Veta Mountain; headwaters of Sangre de Cristo 
Creek; Bob Creek, west of Mt. Hesperus; Cimarron; Eldora to Baltimore; 
Boulder; Horsetooth Gulch; Horsetooth Mountain; Gore Pass; Lake City. 
27. Senecio anacletus Greene. (Y. Toluccanus microdontus A. Gray; Y. 
microdontus Heller) In valleys from Colo, to N. M. and Ariz.; also in Mex. 
—Alt. 8000-11,000 ft.—Mt. Harvard; Veta Mountain; Dolores; Redcliffe; 
headwaters of Pass Creek; Tennessee Pass; Little Kate Mine, La Plata Moun¬ 
tains; Hematite; mountains north of Dolores; Leroux Parks; Silverton; 
Beaver Creek; headwaters of Clear Creek. 
28. Senecio atratus Greene. (Y. lugens foliosus A. Gray) In the moun¬ 
tains of Colo.—Alt. 7500-13,000 ft.—West of Ouray; Red Mountain road, 
south of Ouray; Ragged Mountain; vicinity of Como; West Spanish Peak; 
La Plata Canon; Ward; mountains above Ouray; Marshall Pass; Como, 
South Park; Georgetown; Mt. Princeton; Mt. Harvard; Eldora to Balti¬ 
more; between Sunshine and Ward; Berthoud Pass; Marshall Pass; Clear 
Creek Canon, above Georgetown; Como; Silverton; mountain sides near Em¬ 
pire; Lake City. 
29. Senecio milliflorus Greene. In the mountains of Colo.—Pagosa Springs. 
30. Senecio Purshianus Nutt. (S. canus A. Gray, in part; not Hook.) In 
the mountains from Sask. and B. C. to Tex. and Utah.—Alt. 6000-13,000 ft.— 
Mountain northeast of Boreas; Rabbit-Ears, Larimer Co. 
