184 ROSACEAE. 



Potentilla dissecta glaucophylla (Lehm.) S. Wats. A taller and more glab- 

 rous variety. — Boreas; Beaver Creek Canon; above Beaver Creek; Beaver 

 Creek; camp on Little Beaver; Graymont; Cameron Pass; Lake City; Cari- 

 bou; Red Mountain; Alpine Tunnel; Silver Plume; Camp Creek. 



10. Potentilla juncunda A, Nels. In the mountains of Wyo. and Colo. — 

 Alt. up to 10,000 ft.— Chambers' Lake; Beaver Creek; Cameron Pass; Little 

 Kate Mine. 



11. Potentilla Nuttallii Lehm. (P. gracilis rigida S. Wats.) In mountain 

 valleys from Sask. and B. C. to Colo, and Calif. — Sheephorn Divide, Middle 

 Park; Grizzly Creek; northwest of North Park. 



12. Potentilla brunnescens Rydb. In dry mountain meadowrs from Mont, 

 to Colo. — Alt. about 8ooo ft. — Columbine ; Grizzly Creek ; Steamboat Springs ; 

 Walden. 



13. Potentilla Bakeri Rydb. In the mountains of Colo. — ^Alt. 8000-9000 

 ft. — Grizzly Creek; southwest North Park; Doyle's; Gunnison watershed. 



14. Potentilla filipes Rydb. In the mountains of Colo. — Alt. 5000-10,000 

 ft.— Forks of Poudre and Big South ; above Ouray ; along Bear River ; Como ; 

 Chambers' Lake; Dolores. 



15. Potentilla pulcherrima Lehm. In mountain meadows from Sask. and 

 Alb. to N. M. and Nev. — Alt. 8000-10,000 ft. — ^Lake City; mountains above 

 Denver ; Larimer Co. ; near Empire ; Como ; Silverton ; Beaver Creek ; along 

 the Conejos River, north of Antonito; Rico; Stove Prairie Hill, Larimer 

 Co. ; Campton's ranch ; Dolores ; headwaters of Clear Creek. 



16. Potentilla subjuga Rydb. Mountains of Colo. — Alt. 8000-9000 ft. — 

 Near Empire. 



17. Potentilla nivea L. In alpine-arctic situations from Lab. and Alaska 

 to Colo.; also in Europe and Asia. — Alt. 10,000-13,000 ft. — Devil's Causeway; 

 Empire; Ouray; West Spanish Peak; Cumberland Mine, La Plata Mountain; 

 mountains of Estes Park. 



18. Potentilla uniflora Ledeb. In alpine-arctic situations from Greenl. and 

 Alaska to Colo, and Ore. — 'Alt. 10,000-13,000 ft. — High mountains about Em- 

 pire; Hinsdale Co.; Cameron Pass; Estes Park; Boreas. 



ig. Potentilla atrovirens Rydb. On plains and hills from Minn, and Wyo. 

 to Colo. — ^Williams' Cation, Pike's Peak. 



20. Potentilla pennsylvanica strigosa Pursh. On plains from Hudson Bay 

 and Alb. to Kans. and N. M. (the true P. Pensylvanica L. is not found in 

 Colo.). — Alt. up to 8000 ft. — Antonito; West Mancos Cation; Central City; 

 Empire. 



Potentilla pennsylvanica arachnoidea Lehm. On high plains from Mont, 

 and Utah to N. M. and Ariz. — Alt. 5000-8000 ft. — Lake City; Sangre de 

 Cristo Creek ; Chicken Creek ; Ouray ; near Boulder ; mountains of Estes 

 Park. 



21. Potentilla bipinnatifida Dougl. On plains from Sask. and Alb. to Neb. 

 and Colo. — Alt. 4000-10,000 ft. — Larimer Co. ; Como ; Antonito ; Higho ; Ute 

 Pass; Indian Creek Pass; Gunnison. 



22. Potentilla platyloba Rydb. (F. bipinnaHAda platyloba Rydb.) On 

 plains from Hudson Bay and Alb. to Neb. and Colo. — Mountain View; Gun- 

 nison; Pitkin; Empire. 



