186 ROSACEAE. 



7. ARGENTINA Lam. SILVER-LEAF, GOOSE-TANSY. 



Leaves green and glabrate above. i. A. anserina. 



Leaves silvery-white on both sides. 2. A. argentea. 



1. Argentina anserina (L.) Rydb. (Potentilla anserina L.) Wet soil from 

 Greenl. and Alaska to N. J., Colo, and Calif. Alt. 4000-10,000 ft. Bear 

 River ; Steamboat Springs ; Ft. Collins ; Como ; Platte Canon. 



2. Argentina argentea Rydb. (A. anserima concolor Rydb.; not Potentilla 

 anserina concolor Ser.) In wet mountain meadows from Ass. and Wash. 

 to N. M. and Ariz. Black's Lake; Upper Sangre de Cristo Creek. 



8. FRAGARIA L. STRAWBERRY. 



Pubescence of the scape and petioles spreading or reflexed ; achenes superficial. 

 Calyx in fruit spreading; scape usually with a leafy bract. i. F. bracteata. 

 Calyx in fruit reflexed; scape generally without a leafy bract. 



2. F. americana. 

 Pubescence of the scape and petioles appressed or ascending; achenes set in pits. 



Plant not glaucous ; scape densely strigose. 



Leaflets over 3 cm. long, very veiny beneath ; runners numerous. 



3. F. prolifica. 

 Leaflets 1-3 cm. long, not very veiny ; runners few. 4. F. pumila. 



Plant more or less glaucous. 

 Leaves thin. 



Leaflets obovate ; scape several-flowered. 5. F. glauca. 



Leaflets oblong-cuneate ; scape i-4-flowered. 6. F. panciilora. 



Leaves rather thick, firm ; leaflets oblong-cuneate. 7. F. ovalis. 



1. Fragaria bracteata Heller. In meadows and open copses from Mont. 

 and B. C. to N. M. and Calif. Alt. 8000-11,000 ft Minnehaha ; Little Veta 

 Mountain; Pike's Peak; Georgetown. 



2. Fragaria americana (Porter) Britton. (F. vesca Pursh, in part; not 

 L.) In meadows and woods and on hillsides from Newf. and Man. to Va. 

 and N. M. Dillon Canon; Pennock's mountain ranch; Rist Canon; Boulder; 

 Ute Pass. 



3. Fragaria prolifica Baker & Rydb. In the mountains of Colo. Alt. 7000- 

 10,000 ft. Cameron Pass; Grayback mining camps and Placer Gulch; Pike's 

 Peak; Seven Lakes; bank of Poudre; near Silverton; Como; Chambers' 

 Lake; Columbine; Red Mountain; Breckenridge ; Wahatoya Canon; Pike's 

 Peak; Cheyenne Canon. 



4. Fragaria pumila Rydb. On hillsides from S. D. and Wyo. to Colo. 

 Pike's Peak ; Gunnison ; Seven Lakes. 



5. Fragaria glauca (S. Wats.) Rydb. In meadows and open woods from 

 Mackenzie and Mont, to S. D., Colo, and Nev. Alt. 8000-11,000 ft. Pike's 

 Peak ; Veta Mountain ; Cucharas Valley, near La Veta ; Pass Creek ; East 

 Indian Creek ; Andrew's ranch, Larimer Co. ; Little Kate Basin, La Plata 

 Mountains ; bank of Poudre ; Howe's Gulch ; Como. 



6. Fragaria pauciflora Rydb. On hills from Hudson Bay and Alb. to Colo, 

 and Utah. Alt. 7000-9000 ft. North Boulder Peak; below Halfway House, 

 Pike's Peak; Andrew's Shetland ranch; North Park, near Teller; Pennock's 

 mountain ranch; along the Conejos River, north of Antonito; Minnehaha. 



7. Fragaria ovalis (Lehm.) Rydb. (Potentilla ovalis Lehm. ; Fragaria 

 firma Rydb.) On dry hills from Colo, and Utah to Cent. Mex. Bear Creek 

 Divide, La Plata Mountains. 



