386 CARDUACEAE. 



Pa. and Calif. — Alt. 5000-9000 ft. — Honnold ; Higho; Ft. Collins; Cucharas 

 Valley, near La Veta ; Middle Park; Poudre River. 



12. Artemisia saxicola Rydb. (A. C hamissoniana saxatilis Besser; A. 

 Norvcgica A. Gray; not Fries) On the higher rockies of Colo, and Wyo. — 

 Alt. 11,000-13,000 ft. — Gray's Peak; Silver Plume; Long's Peak; Cameron 

 Pass; Mt. Harvard; Berthoud Pass; headwaters of Clear Creek; Empire; 

 Ethel Peak. 



13. Artemisia Parryi A. Gray. On alpine peaks of Colo. — Sangre de Cristo 

 Pass. 



14. Artemisia silvicola Osterh. In the mountains of Colo, and N. M. — 

 Alt. about 8000 ft. — Mclntyre Creek, Larimer Co. ; near Pagosa Peak. 



15. Artemisia natronensis A. Nels. In valleys of Wyo. and Colo. — Alt. 

 7000 ft. — Cucharas Valley, near La Veta. 



16. Artemisia pudica Rydb. On dry ground in the mountains of Colo. — 

 Alt. about 7700 ft. — Gunnison. 



17. Artemisia rhizomata A. Nels. In valleys from Alb. and Ida. to Colo. 

 — Alt. 8000-10,000 ft. — Ruxton Park; Ruxton Dell; Columbine; Pitkin; Bos- 

 worth's ranch, Stove Prairie. 



18. Artemisia gnaphaloides Nutt. On prairies and river banks from N. D. 

 and Wyo. to Ark. and Colo. ; also introduced eastward to Ont. and N. Y. — 

 Alt. 4000-9000 ft. — Gunnison; on Grizzly Creek; Trail Glen; Ft. Collins; Bos- 

 worth's ranch, Stove Prairie ; above Poudre ; Middle Park ; Denver ; New 

 Windsor; Larimer Co.; Colorado Springs. 



19. Artemisia pabularis (A. Nels.) Rydb. {A. rhizomata pabularis A. 

 Nels.) In dry valleys from Neb. and Wyo. to Colo. 



20. Artemisia ludoviciana Nutt. On prairies and in cations from Mo. and 

 Wyo. to Tex. and Ariz. — Alt. 4000-8000 ft. — Idaho Springs ; Engelmann 

 Cafion; Manitou; between Porter and Durango; near Empire. 



21. Artemisia Underwoodii Rydb. On chaparral-covered hills and moun- 

 tain sides in Colo. — All. 7500-9000 ft. — Ouray; Georgetown. 



22. Artemisia Brittonii Rydb. Dry hills and plains of Colo, and Utah. — 

 Alt. 5000-9000 ft. — Boulder; Empire; Golden; Poudre River flats. 



23. Artemisia diversifolia Rydb. In valleys from Ida. and B. C. to Colo, 

 and Wash. — Pike's Peak. 



24. Artemisia Wrightii A. Gray. On dry plains of Colo, and N. M. — 

 Southern Colorado ; exact locality not given. 



25. Artemisia Bakeri Greene. On dry plains and in canons from Colo, to 

 N. M. and Ariz. — Alt. up to 7000 ft. — Black Canon ; between Porter and 

 Durango. 



26. Artemisia coloradensis Osterh. In mountain valleys from Colo, to 

 Ariz.— Alt. 7000-10,000 ft. — Dale Creek, Larimer Co. ; Marshall Pass ; Pine 

 Grove ; Rustic ; Soldier Cafion ; San Luis Valley ; Lake City. 



27. Artemisia kansana Britton. (A. stcnoloba Rydb.) On dry plains from 

 Kans. and Colo, to N. M. — Alt. 4000-7000 ft. — Cucharas Valley, near La 

 Veta. 



28. Artemisia fraserioides Greene. In the mountains from Colo, to N. M. 

 and Mex. — Alt. about 9000 ft. — Near Pagosa Peak; Roubadeaux Pass; Lake 

 City. 



29. Artemisia elatior (T. & G.) Rydb. In mountain valleys from Macken- 



