ROSE FAMILY., 151 



astringent) sending up lyrately and interruptedly pinnate leaves, and 

 rather naked, several-flowered stems (2° high) ; the flowers pretty large, 

 nodding, with purplish-orange and broadly obovate or oboordate petals 

 narrowed at the base, never spreading ; in fruit the head of akenes erect, 

 stalked in the persistent calyx, the persistent styles jointed and bent in 

 the middle, the upper part plumose-hairy. 



* * Flowers white or yellow; style not plumose. 



*- Head, of fruit sessile in the calyx. 



G. strfctum, Ait. Field A. Moist grounds and fields ; a coarse 

 herb, 3°-5° high, rather hairy, with root-leaves interruptedly pinnate and 

 the leaflets wedge-obovate, those of the stem with 3-5 narrower leaflets ; 

 in summer bearing panicled flowers with broadly obovate golden-yellow 

 petals exceeding the calyx ; stipules large, deeply cut ; the persistent, 

 naked style hooked at the end after the short upper joint falls ; receptacle 

 downy. 



G-. Virginianum, Linn. White A. Thickets and borders of woods ; 

 coarse and bristly-hairy herb l°-3° high, with root and lower leaves of 

 several pinnate leaflets, the upper 3-parted and cut ; the panicled flowers 

 small, with inconspicuous greenish-white petals shorter than the calyx ; 

 head of fruit like the last, but its receptacle smooth or very nearly so. 



Q. Album, Gmelin. White A. Grows in similar places with the 

 preceding, and like it, but smooth or soft-pubescent, with root-leaves of 

 3-5 leaflets, or some of them rounded and simple except a few minute 

 leaflets below ; the petals as long as the calyx, white or pale greenish- 

 yellow ; receptacle bristly. 



*- +- Head of fruit stalked in the calyx. 



G. vemum, Torr. & Gray. Spring A. Thickets, from Penn. to 111. 

 and Ky. ; slender, 2°-3° high ; root-leaves rounded, heart-shaped, and 3- 

 5-lobed, or some of them pinnate and cut ; flowers small, with yellow 

 petals about the length of the simply 5-lobed calyx ; styles smooth, the 

 upper joint falling off ; receptacle smooth. 



10. POTENTILLA, CINQTJEFOIL, FIVE-FINGER. (Name means 

 powerful, from reputed medicinal virtues.) Mostly wild plants in the 

 country ; several are cultivated. 



§ 1. Petals pale yellow, small, not surpassing the calyx. ® @ 



P. Norv&gica, Linn. Norwat C. An erect, hairy, weedy plant, 

 l°-2° high, branching above, with only 3 obovate-oblong and cut-toothed 

 leaflets ; flowers summer, in fields. 



P. suplna, Linn. A spreading or decumbent, pubescent, weedy 

 plant, on river banks W., with pinnate leaves of 5-11 obovate-oblong, 

 cut-toothed leaflets, and akenes with a thick appendage at their base ; 

 flowers summer. 



§ 2. Petals whitish or cream-color, broad, surpassing the calyx; akenes 



smooth. % 



P. arguta, Pursh. A stout, erect, brownish-hairy, coarse plant, l°-4° 

 high, rather clammy above, on rocky hills N. and W., with pinnate 

 leaves of 5-11 oval or ovate, cut-toothed leaflets, soft-downy beneath, and 

 a close terminal cluster of rather large flowers, in summer. 



§ 3. Petals bright yellow, larger than the lobes of the calyx. % 



* Leaves of 5 or more digitate leaflets. 



P. rScta, Linn. Cult, in some old gardens, from Eu. ; a coarse, erect, 

 hairy plant, 2°-3° high; with sometimes 7 narrowly wedge-oblong leaflets, 

 coarsely toothed, and rather large, cymose flowers. 



