iMSTENTiLLA. ICOSANDRIA. POLYGYNIA. 497 



5. P. simplex M ich. : stem sarmentose, simple ; leaves 

 quinate ; leaflets oblong-oval, coarsely serrate, hairy beneath 5 

 stipules incised ; peduncles axillary, solitary, elongated 5 

 petals roundish-obcordate, a little longer than the calyx, 

 Lehm. Potent, p. 142. J\l i c h, FL I. p. 303. Pursh 

 FL I. p. 354. Big. Bost. p. 124. Elliott Sk. I. p, 

 v>74. P, sarme7itosa Willd, Emim. I, p. 564, P. ta/o- 

 Hniana Lam, Enc. V. p. 595. P e r s. Syn, II. p. 55. 



Hoot thick, horizuntal. Whole plant hairyi iStems numerous, 

 somewhat scabr(ms, erect at the base, generally incurved at 

 the summit. Leaves on long petioles, all of them quinate; 

 leaflets oblong, acute or obtuse, rather acutely serrate. Sti' 

 fiules large, laciniate. Pedicels 1 -flowered, as long as the 

 leaves. Segments of the calyx subequal, linear-lanceolate. 

 Petals bright yellow. 



Hab. In fields and dry woods. May — August. Five-finger. 



6. P. argentea L. : stem ascending; leiaves quinate ; leaf- 

 lets cuneiform, incised, rcvolute on the margin, white and to- 

 mentose beneath ; petals retuse, a little longer than the calyx, 

 Lthm. Potent, p. d4, W Hid, Spec. II. p. 1101. Eng, 

 Bot.t. 81). Pursh FL I. p. 355. Big. BosL p. 124. 



Root branched, ligneous. Stents numerous, 4 — 10 inches long, 

 assurgent, or spreading on the ground, purplish, covered with 

 a loose while wool. Leaves all quinate ; the inferior ones pe- 

 tiolate ; leaflets sessile, cuneate, variable in breadth, deeply 

 incised or lobed, very white and woolly beneath, green and 

 mostly glabrous above. Sti/iules ovate, acuminate, some- 

 times incised. -Floioers in terminal duelers; fiediccis ahott. 

 Caltjx very woolly ; segments nearly equal, linear-lanceolate. 

 Petals yellov/jobovaie, emarginate. Receptacle villous. 



Hab. On rocks and in barren fields. Rare near New-York. 

 Fishkill, N. Y. Near Boston, Massachusetts. Big e low. 

 In Ncw-Humpshire and Vermont. Pursh. June — Sep- 

 tember. 



* * * Leaves pinnate. 



7. P.fniticosa L. : stem fruticose; leaves pinnate ; leaf- 

 lets oblong-lanceolate, very entire ; petals longer than the 

 calyx. LrJim. pGlmt.p.3\. W ill d. Spec. \\. p. \0d4. 

 Smith FL Bnt. 11. p. 547. Eng. Bot. t. 88. Pursh 

 FL I. p. 355. V.Jlonbunda Pursh 1. c. 



A shrub about 2 feet high, much branched, hairy ; bark on the 

 the stem and larger branches loose and brownish. Inferior 

 leaves on petioles about an inch long ; the uppermost ones 

 subsessile ; leaflets 5, flat, paler beneath; the lowest pair dis- 

 tinct ; the other 3 confluent at the base. Stipules ovate, en- 

 tire. Flowers large, on short pedicels, 2 — 3 at the extremity 

 of each branch. Calyx silky-villous ; exterior leaflets linear - 



