ROSACEA, (rose family.) 135 



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

 sistent and hooked; receptacle and ovaries bristly -hairy. — Rich 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 in the middle, the upper portion plumose 

 and nearly persistent, the lower pubescent, or smootli 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'), often 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 achenia sessile. — 

 Highest mountains of North Carolina. July. — Flowers T wide. 



11. WALDSTEINIA, Willd. 



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

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

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

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

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



1. W. fragarioides, Tratt. Smooth or hairy ; leaves long-petioled, tri- 

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

 scape as long as the leaves, bracted, many-flowered ; achenia 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, crenately 3 -5-lobed ; 

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

 shorter than the calyx. — Banks 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. Achenia collected 

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

 with variously divided leaves. Flowers solitary or cymose. 



* Style terminal, or nearly so. 



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

 mately 3-foliolate, the leaflets obovate-oblong or lanceolate, coarseh' serrate ; 

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

 places. Introduced, and sparingly naturalized. — Stem l°-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, 



