ROSACE.E. (HOSE FAMILY.) 135 



calyx; stvle jointed and bent near the middle, the smooth lower portion per- 

 sistent ;ind hooked ; receptacle and ovaries bristly-hairy. Uich woods in 

 the upper districts. April -May. Stem 2 high. 



4. G. geniculatum, Michx. Hairy ; leaves pinnate, 3-parted or 3-lobed, 

 the upper ones nearly sessile ; leaflets or lobes thin, ovate and obovate, toothed 

 and serrate ; style jointed and bent iu the middle, the upper portion plumose 

 and nearly persistent, the lower pubescent, or smooth above ; heads of the hairy 

 achenia sessile. High mountains of North Carolina. July. Stem 2 -3 

 high. Flowers white, veiny. 



5. G. radiatum, Michx. Hirsute; stem short (6'- 12'), ofteu branch- 

 ing; lowest leaves pinnate, the terminal leaflet large, reniform, obscurely 

 lobed, doubly toothed, the lateral ones few and small ; stem-leaves scattered, 

 small, sharply toothed, sessile ; flowers large ; petals obcordate, yellow ; style 

 straight and wholly persistent, hairy at the base; heads of acheuia sessile. 

 Highest mouutaius of North Carolina. July. Flowers 1' wide. 



11. WALDSTEINIA, Will,!. 



Calyx obconical, 5-cleft'. with as many alternate bracts. Petals 5. Stamens 

 numerous, inserted into the throat of the calyx. Acheuia 2-6, dry or some- 

 what fleshy. Style terminal, filiform, separating from the achenium by a 

 joint. Seeds erect. Low perennial herbs, with chiefly radical and roundish 

 lobed leaves, and yellow flowers on scape-like stems. 



1. "W". fragarioid.68, Tratt. Smooth or hairy ; leaves long-petioled, tri- 

 foliolate or 3-parted, with broadly cuneate and creuately toothed leaflets; 

 scape as long as the leaves, bracted, many-flowered ; acheuia 4-6, minutely 

 hairy. Mountain woods. May - June. Stem and leaves 4' - 6' high. Petals 

 larger than the calyx. 



2. W. lobata, Torr. & Gray. Hairy ; leaves cordate, creuately 3 - 5-lobed ; 

 scape filiform, bracted, 4 - 8-flowered ; achenia mostly 2, hoary ; petals rather 

 shorter than the calyx. Hanks of the Flint and Chattahoochee Rivers, in the 

 middle districts of Georgia, very rare. May- June. Scape and leaves 4' - 8' 

 high. 



12. POTENTILLA, L. CINQUEFOIL. 



Calyx flat, 5-cleft, with as many bracts. Petals 5, obcordate or roundish. 

 Stamens numerous. Style lateral or terminal, deciduous. Acheuia collected 

 in a head on the dry and pubescent receptacle. Herbs or shrubby plauts, 

 with variously divided leaves. Flowers solitary or cymose. 



* Style terminal, or nearly so. 



1. P. Norvegica, L. Annual, hairy; stem erect, branched; leaves pal- 

 niately 3 foliolate, the leaflets obovate-oblong or lanceolate, coarsely serrate ; 

 flowers pale yellow, in leafy cymes ; petals shorter than the calyx. Waste 

 places. Introduced, and sparingly naturalized. Stem 1- 2 high. 



2. P. Canadensis, L. Perennial, hairy ; stem prostrate or ascending, 

 simple; leaves palmately 5-foliolate; leaflets obovate-oblong, coarsely serrate; 

 flowers axillary, solitary, on long filiform peduncles; petals .yellow, obcordate, 



