&10 ICOSANDRIA.— POLYGYNIA. 



HAB. Old fields. June— Aug. 0. Hairy, 8 

 high ; stip. large ; Jl. yellow. 



** Leaves digitate. 



P. canadensis: whole plant silky villous ; stem pro 

 cumbent and ascending, somewhat branched ; leaves 

 quinate-obovate, incisely dentate ; peduncles soli- 

 tary, elongated ; segments of the calyx linear-lan- 

 ceolate ; petals orbicular, nearly as long as the 

 calyx. 



HAB. Fields and woods. April — May. ij. • Stem 

 2 — 10 in, high ; Jl. yellow ; receipt, hairy. 

 •>. P. simplex : stem sarrnentose ; simple ; leaves qui- 

 natc ; leaflets oblong-oval, coarsely serrate, hairy 

 beneath ; stipules incised ; peduncles axillary, soli- 

 tary, elongated ; petals roundish obcordate, a little 

 longer than the. calyx. 



HAB. Fields and woods, Ma}' — Aug. U . Hairy; 



ped. \-Jl; fl. yellow. 

 P. argenteo : stem ascending ; leaves quinate ;. leal- 

 lets cuneiform, incised, revolute on the margin ; 

 white and tomentose beneath ; petals retuse, a little 

 longer than the calyx. 



IIAB. Rocks and fields. June— Sept. U- Often 

 spi'cading ; leav. gr. above ; Jl. yellow. 



*** Leaves pinnate. 



P. fruticosa: stem fruticose ; leaves pinnaie ; leaf- 

 lets oblong-lanceolate, very entire ; petals longer 

 than the calyx. 



HAB. Bog meadows. June. A shrub, 2 ft. high , 

 much branch. ; Jl. yellow. 

 :\ P. Anscrina : stem creeping ; leaves interruptedly 

 pinnate ; leaflets numerous, incisely and very 

 acutely serrate, silky ; pedicels axillary, solitary, 

 as long as the leaves ; stipules many-cleft. 



IIAB. Wet meadows. June. U. Stems long ; leafl 

 7 — 10 pairs, wk. beneath ; Jl. yellow. 

 9, P. supina : stem decumbent, dichotomous ; leaves 

 pinnate ; leaflets oblong, incisely serrate ; pedun 

 cles axillary, solitary, 1 -flowered. 



IIAB. Overflowed banks. June— Aug. £>, Ft- 

 small j yellow. 



