ICOSANDRIA.— POLYGYRIA. 209 



BAB. Woods and thickets. June— July. H. Stem 

 2 ft. high ; fl. pedunc., yell.-wh. 



G. album : pubescent ; radical leaves pinnate ; stem 

 leaves ternate, the upper one simple, 3-cleft 5 

 lower stipules incised ; flowers erect ; petals as 

 long as the calyx ; awns uncinate, naked, hairy at 

 the summit. 

 HAB. Banks of rivers, &c. June — July. Stem 1ft. 

 high ; fl. wh., on short ped. 



G. rivale : pubescent ; stem simple ; radical leaves 

 interruptedly pinnate ; cauline ones 3-cleft ; flow- 

 ers nodding ; petals as long as the calyx ; awns 

 plumose, nearly naked at the summit, minutely 

 uncinate. 



HAB. Begs. May — June. Stem \\ ft. high ; term, 

 leafl. large ; fl. purp. 



G. Peckii : somewhat hairy; slem few-flowered; 

 radical leaves reniform ; incisely toothed, and 

 somewhat lobed ; petioles elongated, with minute 

 leaflets ; petals roundish, longer than the calyx. 



HAB. High mountains. July — Aug. U . A span 

 high ; fl. middle sized, yellow. 



332. POTENTILLA. Rosacea. 

 * Leaves ternate. 



P. tridentata : assurgent ; stipules subulate ; leaves 

 ternate, oblong cuneiform, 3-toothed at the sum- 

 mit, smoothish above, pubescent beneath ; corymb 

 loose, few-flowered ; petals oblong-obovate, longer 

 than the calyx. 



HAB. Mountains. June — July. Cespit., 3 — 6 in. 

 high ; leav. coriac. ; fl. wh, 



P. hirsuta : stem erect, simple ; leaves ternate ; 

 leaflets roundish, hairy, unequally dentate-serrate ; 

 teeth obtu.se ; petals shorter than the calyx. 



HAB. New-York. July — Aug. ©. Stem purp., 

 hairy ; fl. dichot. ; pale ijellozv ; (o,7i.) 



P. norvegica : stem erect, dichotomous above ; 

 leaves ternate, petiolatc ; leaflets oblong, acutely 

 serrate, with spreading hairs ; pedicels i.mI 1 

 petals obovatC; shorter than the calyx. 



