roTENTiLLA. ICOSANDRIA. TOLYGYNIA. 49i 



* Leaves tematci 



1. P.' tridentata Ait.: assurgent ; stipules subulate; 

 leaves ternate, oblong-cuneiform, 3-toothed at the summit, 

 smoothish aboi'e, pubescent beneath; corymb loose, few- 

 flowered ; petals oblong-obovate, longer than the calyx. 

 L e h m. Potent, p. 1 90. W i 1 1 d. Spec. II. p. 1 11 0. A i t. 

 Kew. II. p. 216. t. 9. Eng, Boi. t. 2389. Mi c h. Fl. L 

 p. 302. Pursh Fl. I. p. 333. 



Boot creeping, somewhat ligneous. Sfe;«s numerous, 3 — 6 inches 

 high, simple, hairy, wiih the hairs appressed, covered at the 

 base with the persistent naked petioles of former leaves. 

 Leaves all ternate, somewhat coriaceous; the upper ones 

 nearly sessile ; leaflets nearly an inch long, a little shining 

 above, mostly 3-tcothed at the summit, sometimes retuse or 

 5-tcothed. Sti/iiiles lanceolate, acuminate. Flowers middle- 

 sized, 6-i~8 on the summit of each stem, in a sort of corymb; 

 jiedicels short. Culyx hairy ; exterior segments linear ; inte- 

 rior longer, ovate, rather acute. Petals white, sometimes with 

 a tinge of red, obovate, half as long again as the calyx. Re- 

 cejitacie villous. 



Hab. Among rocks on the summit of mountains. On the Fish- 

 kill Mountains. New-York. On the Catskill Mountains, N.Y. 

 Kne-v els and Ra fines q u e. Near Williams College, 

 Massachusetts. Dewey. On the White Hills of New- 

 Hampshire. Bige low, June — July. 



2. P. hirsuta Mich.: stem erect, simple; leaves ter- 

 nate, petiolate; leaflets roundish, hairy, unequally dentate- 

 serrate ; teeth obtuse ; petals shorter than the calyx. Lehm. 

 Potent, p. 155. Nest. Monog. Potent, t. 9. f. 1. (teste 

 Lehm.) Mic h. FL \. p. 303. Pursh Fl. I. p. 354. 

 P. MoTLSoni De Cand. Cat. Hort. Monsp. p. I35. P. 

 monspeliensis fVilld. Spec. II. p. 1109. Fragaiha parviflora 

 Lam. Fl. Tran. III. p. 112. Pentaphylloides, &c. Moris. 

 II. §. 2. t. 20. f. 2. 



Root annual. S^em erect, terete, nearly simple, purple, covered 

 with soft spreading hairs. Lower leaves on long petioles, al- 

 ternate ; the uppermost ones small, opposite; leaflets of the 

 lower leaves roundish ; of the upper oblong or obovate, ob- 

 tuse, toothed, and somewhat incised ; under surface more 

 hairy than the upper. Stifiules ovate-oblong, mostly entire. 

 Flowers few, in a terminal dichotomous panicle. Caly:r hairy; 

 segments equal in length ; the exterior oblong, rather obtuse ; 

 the interior semi-ovate, acute. Petals pale yellow, (white, 

 Mich.,) obovate, slightly emarginate, or almost obcordate, a 

 little shorter than the calyx. Rece/itade ovate, smooth. .^c/?jc.s 

 rugulous. Lehm, 



