{9. Fragaria L. Straw berry. 
Low perenhial herbs with leaves in a basal tuft on scaly rootstocks, 
bearing slender rooting stolons. Leaves 5-foliolate. Flowers white, borne 
in few-flowered cymes. Calyx 5-parted, the tube almost flat, the sepals 
alternating with 5 sepal-like appendages. Petals 5, subrotund. Stamens 
about 20-40 in 2 or 3 series, seated at the base of the receptacle. Pistils 
numerous, borne on a subconic receptacle. Styles attached near the middle 
of the ovaries. Fruit a red, fleshy accessory fruit, formed principally 
from the enlarged juicy receptaéke. 
0 Leaflets pale greyish-green, the margins convex |. Fe glauca 
—, 
Leaflets bright green, the margins cuneate and 
4 straight below the middle, not convex g, Fe americana 
—_—_— 
1. Fe glauca (Wats.) Rydb. —— >Rootstock scaly, the stolons slender, 
30-40 cm. long, silky-hirsute; leaves several, the petioles silky-villous, 
commonly 10-20 cm. long, leaflets pale greyish green, appearing glaucous, 
the upper surface glabrous, appressed-silky on the lower surface, the blades 
of the lowermost oval, usually entire in the lower half, the margins convex, 
not wedge-shaped, the upper obovate, tapering gradually and often entire 
two thirds of its length, all rounded at the apex, even, somewhat truncate, 
3=7 cme long, commonly half as broad as long, the margins coarsely toothed 
at the apex, the teeth ovate, mucronate; flowers several on slender silky© 
villous peduncles about equal to the leaves,soon reflexed, sometimes bearing 
a unifoliate bract at the base of the cluster and smaller toothed bracts 
above; calyx-lobes 5-6 mne long, ovate-lanceolate, appressed-silky, the 
appendages similar, usually about as long; petals white, plane, nearly orbic- 
ular, 5-9 mm. in diameter, commenly rotate; stamens 50-40 in 5 irregular rows, 
very unequal, the anthers 1.3 mm. long, styles 1 mm. long; fruit oval, 10-15 
mme long, the calyx-lobes spreading; achenes 1 mm. long. 
lt 
Common throughout our range at lower elevations, growing in situations 
similar to those of F. americana and with that species, from which it may 
readily be distinguished in the field by the shape of the leaflets but 
especially by its pale glaucous foliage. Intermediate forms do not seem to 
occur in our region. 
