ROSE TRIBES 



387 



533. Fragaria vesca. 



stem-leaves few, simple, lobed, or 3-divided or toothed and short-petioled: 

 flowers whitish, the petals not longer than sepals: head of fruits sessile in 

 the calyx: styles jointed and bent near middle, the lower part hooked: torus 

 bristly. Late spring and summer. 



G. virginianum, Linn. Differs from preceding in being hirsute: root- 

 leaves various, but pinnate, with a very large 

 rounded terminal leaflet; the upper leaves mostly ^- 

 3-parted: flowers white or pale yellow: receptacle ^ aS * 

 not bristly; heads of fruits on short, stout, hairy 

 stalks. Low ground. Summer. 



3. AGRIMONIA. Agrimony. 



Perennial, erect herbs, with alternate odd-pin- 

 nately compound leaves, and slender, spike-like 

 racemes, with yellow flowers: leaves with small seg- 

 ments interposed, and large dentate stipules: calyx- 

 tube contracted at the throat with a 5-cleft limb, and bristly on upper 

 part; petals 5; stamens slender, 5-15, carpels 2, styles terminal: fruit dry, 

 included in the prickly calyx-tube. 



A. gryposepala, Wallr. Spicate raceme terminating the stem (6 in. to 2 ft. 

 high) , petals yellow and twice longer than the calyx. Dryish soils. Summer. 



4. FRAGARIA. Strawberry. 



Low perennials with 3 broad-toothed leaflets and a few flowers on radical 

 peduncles: torus enlarging in fruit, usually becoming fleshy. 



F. vesca, Linn. Fig. 533. Small, very sparsely hairy, the leaves thin 



and rather light green, very sharply toothed: flower-clusters overtopping 



the foliage, small and erect, forking: fruit slender and pointed, light colored 



(sometimes white), the achenes not sunk in the flesh. Cool woods; common 



North. 



F. virginiana, Duch. Common field strawberry. 

 Fig. 534. Stronger, darker green, loose-hairy, the 

 leaves with more sunken veins and larger and firmer: 

 flower-cluster slender but not overtopping the leaves, 

 in fruit with drooping pedicels: fruit globular or 

 broad-conical, with achenes sunk in the flesh; light 

 colored. Very common. 



F. chiloensis, Duch. Garden strawberry. Fig. 

 291. Low and spreading but stout, the thick leaves 

 somewhat glossy above and bluish white beneath, 

 rather blunt-toothed: flower-clusters short, forking, 

 the pedicels strong and long: fruit large and firm, dark colored, with 

 sunken achenes. Chile. 



5. PRUNUS. Peach. Plum. Cherry. 



Trees and shrubs, mostly floweriim in early spring: sepals, petals and 

 stamens borne on the rim of a saucer-shaped torus, the calyx with 5 green 



534. Fragaria virginiana. 



