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ROSACEAE. 
7. ARGENTINA Lam. Silver-leaf, Goose-tansy. 
Leaves green and glabrate above. 1. 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. 1. 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 1-4-flowered. 6. F. pauciflora. 
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. 
