124 • ROSACEA, (rose family.) 



shorter than the calyx. (Dalibanla lobata, Baldw.) — Banks of the Flint and 

 Chattahoochee rivers, in tlie middle districts of Georgia, not common. May 

 and June. — Scape and leaves 4'- 8' high. 



11. POTENTILLA, L. Cinquefoil. 



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

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

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

 variously divided leaves. Flowers solitary br cymose. 



* Style terminal, or nearly so. 



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

 mately 3-folioIate, 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 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, 



as long as the calyx. (P. simplex, Michx.) — Meadows in the upper districts, 



Mississippi to North Carolina, and northward. July and August. — Stem 



l°-3° long. 



* * Style lateral. 



3. P. tridentata, Ait. Stem somewhat shrubby at the base, erect or as- 

 cending, pubescent ; leaves rigid, trifoliolate, cuneate-oblong, 3-toothed at the 

 apex ; flowers white, in a terminal cyme. — High mountains of North Carolina. 

 July. — Stem 5' - 10' high. Achenia and receptacle very hairy. 



12. FK.AGARIA, Toura. Strawberry. 



Flowers like Potentilla, but the dry achenia borne on the enlarged, at length 

 pulpy and scarlet receptacle. Style lateral. — -Perennial herbs with creeping 

 nmners. Leaves radical, trifoliolate. Flowers white, in terminal cymes. 



1 . F. Virginiana, Ehrhart. Hairy ; leaflets oblong, coarsely serrate ; 

 scape fcw-flowcred ; fruit roundish, the achenia imbedded in the deeply pitted 

 receptacle. — Rich woods, Florida to Mississippi, and northward. March and 

 April. — Scapes 4' -6' high. 



13. RUBUS, L. Brier. Br.^mble. 



Calyx concave or flattish, 5-parted, without bracts. Petals 5, deciduous. 

 Stamens numerous. Achenia juicy, crowded on the conical or cylindrical re- 

 ceptacle. Style nearly terminal, deciduous — Perennial or shrubby and mostly 

 prickly plants, with lobed or compound petioled leaves, and wiiite or reddish 

 flowers. 



* Heads of achenia hemispherical, deciduous : receptacle dry. 



1. R. odoratUS, L. Shrubby, not prickly; the branches, petioles, and 

 corymbs hispid with glandular hairs ; leaves large, broadly ovate, 3-lobed, or 



