ROSACEAE. 185 



23. Potentilla filicaulis (Nutt.) Rydb. (P. effusa filicaulis Nutt.) In the 

 mountains from Colo, to Ida. Beaver Creek. 



24. Potentilla rubripes Rydb. (P. rubricaulis Rydb., mainly; not Lehm.) 

 In the higher mountains from Alb. to Colo. Alt. 10,000-13,000 ft. Estes 

 Park; Mt. Abram, Ouray; Pike's Peak; Little Kate Mine, La Plata Moun- 

 tains; Cameron Pass; Berthoud Pass; Rabbit-Ears, Larimer Co. 



25. Potentilla minutifolia Rydb. On the higher peaks of Colo. Alt. 9000- 

 13,000 ft. Graymont; Georgetown; Saddle, Pike's Peak; mountains of Estes 

 Park; Cumberland Mine; Eldora to Baltimore. 



26. Potentilla tenerrima Rydb. On the higher mountains of Colo. Alt. 

 10,000-13,000 ft. Pike's Peak; West Spanish Peak. 



27. Potentilla saximontana Rydb. On the higher peaks of Colo. Alt. 

 10,000-13,000 ft. Pike's Peak; West Spanish Peak. 



28. Potentilla pinnatisecta (S. Wats.) Rydb. In the mountains from Alb. 

 to Colo, and Utah. Alt. 8000-12,000 ft. Little Kate Mine, La Plata Moun- 

 tains ; mountains of Estes Park. 



29. Potentilla plattensis Nutt. In mountain meadows from Sask. to Colo, 

 and Utah. Alt. 8000-10,000 ft. Platte River, South Park; Tobe Miller's 

 ranch; Walden; Gunnison; Ojo; Placer Gulch; headwaters of Sangre de 

 Cristo Creek; Buena Vista. 



30. Potentilla rupincola Osterh. Mountains in Colo. Dale Creek, Larimer 

 Co. 



31. Potentilla Hippiana Lehm. On plains and in meadows from Minn., 

 Sask. and Alb. to N. M. and Ariz. Alt. 4000-10,000 ft. Near Empire; Trap- 

 per's Lake; Estes Park; Willow Creek; Georgetown; Gunnison; Colorado 

 Springs ; South Park ; Chambers' Lake ; Upper Laramie River ; Forrester's 

 ranch, Larimer Co.; North Park; Indian Creek Pass. 



32. Potentilla propinqua Rydb. (P. Hippiana diffusa Lehm.) In meadows 

 from Colo, to N. M. and Ariz. Alt. 6000-10,000 ft. Rico; Como; near Nar- 

 rows; Durango; Chambers' Lake; near Pagosa Peak; Mancos; Pagosa 

 Springs; Ruxton Dell; Chicken Creek; Pitkin; Mt. Hesperus; North Park; 

 Grizzly Creek, southwest of North Park. 



33. Potentilla effusa Dougl. On plains and hills from Ass. and Mont, to 

 N. M. Alt. 5000-10,000 ft. Crow Creek; near Empire; Bosworth's ranch; 

 Poudre flats, above Ft. Collins; Estes Park, Larimer Co.; Table Rock; 

 Moore's ranch; Manitou; Cameron Pass; Cascade; Indian Creek Pass; 

 Sangre de Cristo Creek; near Boulder. 



34. Potentilla coloradensis Rydb. In the mountains of Colo. Alt. 8000- 

 10,000 ft. Georgetown; South Park; Estes Park, Larimer Co.; Empire; 

 Chambers' Lake; Minnehaha; Silver Plume; Como. 



35. Potentilla ambigens Greene. In the mountains of Colo, and N. M. 



36. Potentilla crinita A. Gray. On dry hills of Colo., Utah, N. M. and 

 Ariz. Piedra. 



6. HORKELIA C & S. 



i. Horkelia Gordonii Hook. On dry mountains from Mont, and Wash, to 

 Colo, and Calif. Alt. about 11,000 ft. Buffalo Pass; summit of North 

 Park Range, Routt Co.; Ethel Peak. 



