CARDUACEAE. 395 



of Clear Creek ; Rabbit-Ears, Larimer Co. ; summit of North Park Range, 

 Routt Co. 



1 8. 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. (S. lugens A. Gray, mainly; not Richard- 

 son; ,S\ 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. (S. Toluccanus microdontus A. Gray; 5". 

 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. (S. 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. 



