152 ROSE FAMILY. 



P. Canadensis, Linn. Common Wild C. or Five-finger. Open, dry- 

 ground ; . dwarf, silky-hairy, with wedge-obovate leaflets, and axillary, 

 1-flowered peduncles ; flowering from early spring to midsummer, and 

 spreading by runners. A prostrate plant, variable, resembling a Strawberry. 



P. arg^ntea, Linn. Silvery C. Dry fields, banks, and roadsides N. ; 

 a low, spreading or prostrate, much branched, white-woolly weed, with 

 wedge-oblong, cut-pinnatifid leaflets green above, white with silvery wool 

 beneath, and the margins revolute ; the small flowers somewhat panicled ; 

 all summer. 



# * Leaves pinnate ; receptacle and sometimes the akenes white-hairy. 



P. Ansexina, Linn. Silverweed. Wet banks and sandy shores, 

 N. and W. ; leaves all from the root or in the tufts at the joints of the 

 long, slender runners, green above, silvery with silky down beneath, of 

 9-19 oblong, cut-toothed principal leaflets and some pairs of minute ones 

 intermixed ; stipules conspicuous and many-cleft ; flowers solitary on 

 long, scape-like peduncles, all summer. 



P. fruticdsa, Linn. Shrubby C. Wet grounds N. ; 2°-4° high, 

 woody, silky, very much branched, with 5 or 7 crowded, oblong-lanceolate, 

 entire leaflets, scale-like stipules, and loose clusters of rather showy 

 flowers, all summer. Cultivated. 



§ 4. Petals white ; akenes and receptacle hairy ; leaflets only 3, digitate. 21 



P. tridentata, Ait. Three-toothed C. Coast of N. England N. and 

 W. and on mountains ; 4'-6' high, tufted, spreading, with 3 thickish, 

 nearly smooth leaflets, coarsely 3-toothed at the end, and several flowers 

 in a cyme, in early summer. Cultivated. 



§ 5. Petals purple, rose-color, or crimson ; akenes smooth. 2/ 



# Wild in wet and cold bogs N. ; petals narrow, shorter than the calyx. 



P. paldstria, Scop. Marsh Eive-finger. Stems ascending from an 

 almost woody creeping base ; leaves pinnate, of 5-7 lance-oblong serrate 

 and crowded leaflets, whitish beneath ; flowers in a small cyme, the calyx 

 nearly 1' broad, the inside as well as the petals, dull dark purple ; recep- 

 tacle becoming large and spongy ; flowers all summer. 



* * From Himalaya, occasionally cult, for ornament; petals large, 



obcordate. 



P. Nepalensis, Hook. Nepal C. Leaflets 3 in the upper, 5 in the 

 lowest leaves, digitate, hairy but green both sides, wedge-oblong, coarsely 

 toothed ; flowers rose-red, all summer. P. HopwoodiIna, with flesh- 

 colored flowers, is a garden hybrid of this and P. recta. 



P. atrosangulnea, Lodd. Dark Nepal C. Is soft silk-hairy, with 3 

 leaflets to all the leaves, and much darker-colored flowers than in the pre- 

 ceding, brown-purple or crimson. 



11. FRAG ARIA, STRAWBERRY. (Name from fraga, the old Latin 

 name of the strawberry, referring to the fragrance.) 2/ 



§ 1. True Strawberries. Petals white; receptacle of the fruit high- 

 flavored; scapes several-flowered; runners naked. Flowers in spring 

 and early summer, those of all but the first species inclined more or less 

 to be dixcious. 



F. vesca, Linn. Common S. of Eu. Yields the Alpine, Perpetual, 

 etc., its American form (var. Americana, Porter) plentifully native N. ; 

 is mostly slender, with thin, dull leaflets, strongly marked by the veins, 

 calyx remaining open or reflexed after flowering, small ovoid-conical or 

 elongated fruit, high-soented, and the akenes superficial. The flowers 

 usually stand above the leaves. 



