CARDUACEAE. 355 



13. Aster violaceus Greene. In the mountains of Colo. Mt. Harvard. 



14. Aster exiguus (Fern.) Rydb. (A. ciliatus Muhl.) On prairies and 

 plains from Vt. and Wash, to Pa. and Ariz. ; also in Mex. Ft. Collins ; 

 Olathe; Gypsum; Sunset Canon. 



15. Aster crassulus Rydb. On plains from N. D. and Ida. to Colo, and 

 Calif. (?) Alt. 4000-8000 ft. Near Denver, Platte River; La Veta; Gun- 

 nison; Parlin, Gunnison Co.; Seldon; along Bear River, below Steamboat 

 Springs; Pagosa Springs; Gypsum; Ft. Collins; Hotchkiss. 



16. Aster multiflorus Ait. On prairies and sterile ground from Me. and 

 Mont, to Ga. and Mex. Alt. 4000-5000 ft. Near Bent's Fort; Ft. Collins. 



17. Aster polycephalus Rydb. (A. scoparius D. C. ; not Nees) On plains 

 and hills from Alb. and Neb. to Tex. and Ariz. Alt. 4000-7000 ft. Colorado 

 Springs; McCoy; Twin Lakes; Ft. Collins; Trail Glen; Westcliffe; Salida; 

 Olathe; Poudre River; Baxter's ranch; Poudre Canon. 



18. Aster commutatus A. Gray. On plains and river banks from Minn, to 

 Wyo., to Kans. and Nev. Alt. 4000-7000 ft. Colorado Springs; Gunnison; 

 Westcliffe. 



19. Aster falcatus Lindl. In valleys from Mackenzie and Alaska to Colo. 

 Alt. about 8000 ft. Doyles ; Gunnison Co. ; near Colorado City. 



20. Aster Lindleyanus T. & G. In valleys from Lab. and B. C. to N. H. 

 and Colo. Poudre near La Porte. 



21. Aster laevis L. In open woodlands from Ont. and Sask. to La. and 

 N. M. Westcliffe ; Tobe Miller's ranch; Poudre River; Ft. Collins; Ruxton 

 Dell. 



22. Aster Geyeri (A. Gray) Ho well. (A. laevis Geyeri A. Gray) Valleys 

 from Alb. and Wash, to Colo. Alt. 6000-8000 ft. Cheyenne Mountain; 

 North Cheyenne Canon ; Parlin, Gunnison Co. ; mountains, Larimer Co. ; near 

 Pagosa Peak; Engelmann Canon; Box Canon, west of Ouray; Ft. Collins; 

 Redstone; Poudre River; Bosworth's ranch; Palmer Lake. 



23. Aster Porteri A. Gray. In the mountains of Colo. Alt. 5000-10,000 ft. 

 Golden; Lower Boulder Canon; Minnehaha; Idaho Springs; North Chey- 

 enne Canon; Ft. Collins; Bosworth's ranch; Cheyenne Mountain; between 

 Sunshine and Ward ; canon west of Palmer Lake. 



24. Aster subracemosus Rydb. In valleys from Mont, and Colo. Alt. 7500- 

 8500 ft. Southeast of Ouray; North Park. 



25. Aster salicifolius Lam. On wooded banks from Me. and Ass. to Fla., 

 Tex. and Colo. New Windsor; North Park; Ft. Collins. 



26. Aster paniculatus Lam. On wooded banks from N. B. and N. D. to 

 Va., Kans. and Colo. Gypsum. 



27. Aster hesperius A. Gray. Along streams from Colo, to N. M. and Calif. 

 New Windsor. 



28. Aster coerulescens DC. (A. salicifolius coerulescens A. Gray) On 

 rocky banks from Wyo. to Tex. and Colo. New Windsor; Ft. Collins; 

 Olathe, Montrose Co.; Gypsum; Poudre River; Home. 



29. Aster Osterhoutii Rydb. Along ditches in northern Colo. New Wind- 

 sor. 



30. Aster fluviatilis Osterhout. Along streams in Colo. New Windsor. 



31. Aster laetevirens Greene. Along streams in Colo, and Wyo. Home; 

 Dale Creek, Larimer Co. 



