2IO ROSACEAE. 



281. DASIPHORA. 



Small shrubs with pinnate leathery leaves; stipules sheathing, 

 scarious; flowers axillary, yellow; calyx- tube saucer-shaped; 

 bractlets, sepals and petals 5, the petals nearly orbicular; stamens 

 numerous; pistils numerous; styles club-shaped, thick and 

 glandular upward, inserted near or below the middle of the 

 ovary; stigmas large, 4-lobed; akenes densely covered with long 

 straight hairs. 



Dasiphora fruticosa (L.) Rydb. Much branched, 30-100 cm. high; leaves 

 numerous, pinnate with 5-7 leaflets; leaflets linear to lanceolate-oblong, acute, 

 somewhat involute, silky, paler beneath, 1-2 cm. long; petals bright yellow, 

 orbicular, twice as long as the sepals. 



In rocky places in the mountains at about 1500 m. altitude. 



282. SEBBALDIA. 



Depressed somewhat woody alpine plants with alternate 

 trifoliolate leaves; flowers in cymes on nearly leafless peduncles; 

 calyx persistent, slightly concave, 5-lobed, with 5 bracts; 

 petals 5, yellow, much smaller than the calyx-lobes; stamens 5, 

 on the margin of the villous disk; carpels 5-10, on short pubescent 

 stipes; styles lateral. 



Sibbaldia procumbens L. Perennial, sparsely villous, 5-15 cm. high; 

 leaflets 3, rather thick, cuneate, 3-5-toothed at the truncate apex, 1-2 cm. 

 long; peduncles usually shorter than the leaves; petals yellow, acute. 



At high altitudes in the mountains. 



283. FRAGARIA. Strawberry. 



Acaulescent perennial herbs, propagating by runners; leaves 

 alternate, basal, tufted, 3-foliolate, with obovate serrate leaflets; 

 flowers polygamo-dioecious, white, few, in corymbs or racemes, 

 on naked scapes; calyx deeply 5-lobed, with 5 alternate bractlets; 

 petals 5, obovate, short-clawed; stamens numerous, in 1 row; 

 style lateral; carpels numerous; receptacle much enlarged and 

 fleshy in fruit, conical, scarlet or white, bearing the small turgid 

 akenes on the surface. 



Leaves thick, silky and tomentulose beneath. 



Leaflets strongly reticulate ; pubescence close. F. chiloensis. 



Leaflets not strongly reticulate; pubescence loose. F. crinita. 

 Leaves thin, not at all tomentulose beneath. 



Flowers white. F. bracteata. 



Flowers pink. F. helleri. 



Fragaria chiloensis (L.) Duch. Rootstock stout; leaves usually 3-10 cm. 

 long, the petioles villous; leaflets obovate, the lateral ones oblique, coarsely 

 toothed, firm, nearly glabrous above, densely silky beneath, reticulated, 

 2-5 cm. long, all with short petiolules; scape villous, usually longer than the 

 leaves, the cyme few-flowered; calyx silky- villous, the lobes lanceolate, acute, 

 longer than the bractlets; petals nearly orbicular; fruit hemispherical, sweet 

 and juicy, the akenes nearly superficial. 



