424 ROSACE.\E 



above when young, glabrate in age, densely silky and slightly tomentulose 

 beneath; scape slender, less than 1 dm. high; flowers 1.5-2 cm. in diameter; 

 bractlets and sepals linear-lanceolate; petals obovate-cuneate, a third longer 

 than the sepals; fruit subglobose, about 1 cm. in diameter, villous. Mountains: 

 B.C.— Ore.— Ida. Submont. My-Jl. 



6. F. platypetala Rydb. Leaflets broadly cuneate or obovate, 2-8 cm. 

 long, coarsely serrate or crenate above the middle, moderately thick, glabrous 

 and glaucous above and appressed-silky beneath; scape about 1 dm., seldom 2 

 cm. high, often leafy-bracteate ; flowers large, 1.5-2.5 cm. in diameter; sepals 

 and bractlets lanceolate; petals almost orbicular, usually twice as long as the 

 sepals; fruit hemispheric, 1-1.5 cm. in diameter. F. latiuscula Greene. Hills: 

 Alaska— Calif.— Utah— Wyo.— Mont. Submont.— Mont. My-Jl. 



7. F. grandiflora Ehrh. Leaflets 4-15 cm. long, broadly obovate, coarsely 

 toothed, usually rounded at the apex, rather firm, very dark green, glabrate 

 and somewhat shining above, paler beneath and silky on the veins; scape 1-2 

 dm. high, usually shorter than the leaves; flowers over 2 cm. in diameter; bract- 

 lets lanceolate, about equalling the ovate acuminate sepals; petals rounded-obo- 

 vate, over 1 cm. long; fruit 2-3 cm. in diameter, often acutish at the apex, some- 

 times laterally flattened or irregular in outline. Waste places: Calif. — B.C.; 

 in the East; escaped from cultivation; native of S.Am. My-Jl. 



8. F. prolifica Baker & Rydb. Leaflets obovate, rounded at the apex, 

 coarsely toothed with very broad teeth, rather thin and dark green, glabrous 

 above, sparingly silky or glabrate and strongly veined beneath; runners very 

 numerous; scapes many-flowered, appressed-strigose, seldom over 1 dm. high; 

 flowers about 1 cm. in diameter; sepals and bractlets ovate-lanceolate; petals 

 obovate, a little exceeding the sepals; fruit hemispheric, 1-1.5 cm. in diameter. 

 Mountains: Colo. Submont. — Mont. My-Au. 



9. F. pumila Rydb. Leaflets oblong or narrowly obovate, 1-3 cm. long, 

 crenate, small and thick, dark green and silky above when young, soon glabrate, 

 silky-strigose and finely puberulent beneath; scape few-flowered, usually about 

 5 cm. long; flowers 1-1.5 cm. in diameter; petals obovate, exceeding the sepals 

 by about a half; fruit scarcely 1 cm. in diameter. Dry hills: N.D. — Colo. 

 — Wyo. Submont. — Subalp. My-Jl. 



10. F. glauca (S. Wats.) Rydb. Leaflets broadly obovate, 3-5 cm. long, 

 coarsely toothed, thin, glaucous and almost glabrous above, silky or at last 

 glabrate beneath; scape slender, rarely exceeding the leaves; flowers 1.5-2 cm. 

 in diameter; petals obovate, exceeding the sepals by about a half; fruit subglo- 

 bose, 1-1.25 cm. in diameter. Fragaria virginiana (?) glaitca S. Wats. Moun- 

 tains: B.C.— Xev.—N.M.—S.D.— Mack. Plain— Subalp. My-Au. 



11. F. pauciflora Rydb. Leaflets cuneate, subsessile, coarsely toothed 

 above the middle, the lateral ones scarcely at all oblique at the base, thin and 

 glaucous, almost glabrous above and soon glabrate beneath; scape 2-4-flowered, 

 5-15 cm. long, seldom exceeding the leaves; flowers 1-1.5 cm. in diameter; petals 

 obovate; fruit subglobose, about 1 cm. in diameter; achenes set in very deep 

 pits. Hills: Hudson Bay — Colo.— Alta. Plain — Mont. Je-Au. 



12. F. ovalis (Lehm.) Rj^db. Leaflets subsessile or short-petiolulate, oblong 

 or cuneate, 2-3 cm. long, toothed above the middle, thick and firm, somewhat 

 glaucous, glabrate above, rather densely silky beneath; scape short, not much 

 over 5 cm. high; flowers 1-1.5 cm. in diameter; petals obovate, exceeding the 

 sepals by a half; fruit subglobose, about 1 cm. in diameter. F. firnta Rydb. 

 Dry hills: Ariz. — N.M. — Wyo. Son. — Mont. Je-Au. 



16. SIBBALDIA L. 



Low, tufted perennial herbs, with short cespitose caudices or rootstocks and 

 ternate leaves. Hypanthium saucer-shaped or cup-shaped, small. Bractlets, 

 sepals, and petals 5. Petals yellow, obovate, cuneate, or oblanceolate, scarcely 

 equaUing the sepals. Stameno 5, inserted not very close to the small receptacle; 



