ICOSANDlilA— MONOGYNIA. Prunus. 353 



256. FRAGARIA. Co/. 10-cleft. Seeds naked, e\eu, on 



the surface of a pulpy, deciduous receptacle. 



261. COM ARUM. Cal. 10-cleft. Seeds naked, even, on 

 the surface of a spongy hairy permanent receptacle. 



257. POTENTILLA. Ca/. 10-cleft. St-^rfs naked, rug- 



ged, beardless. Recept. dry, obsolete. 



Spircea 2, 3. 



ICOSANDRIA MONOGYNIA. 



250. PRUNUS. Plum and Cherry. 



Linn. Gen. 219. Juss. 34 1 . Fl. Br. 526. Tourn. f. 398. Lam. 



t. 432. Gcertn. t. 93. 

 Cerasus. Tourn. t.AQ\. 



Nat. Ord. Pomacece. Linn. 36. Bosncete. Juss. 92. N. 251 

 — 253 the same. 



Cal. inferior, of 1 leaf, bell-shaped, deciduous, with 5 ob- 

 tuse concave marginal segments. Pet. 5, roundish, con- 

 cave, spreading, larger than the segments of the calyx, 

 their short claws proceeding from its rim. Filam. 20 — 

 30, awl-shaped, nearly as long as the corolla, from the 

 rim of the calyx within the petals. Anth. short, of 2 

 round lobes. Germ, superior, roundish. Style thread- 

 shaped, terminal, the length of the stamens. Stigvia or- 

 bicular, peltate. Drtipa roundish or elliptical. Nut very 

 hard, somewhat compressed, of 1 cell and 2 more or less 

 distinct valves, prominent at the margin, with an inter- 

 mediate furrow; kernel solitary, suspended from the top. 



Trees, or shrichs, sometimes thorny ; with alternate, stalked, 

 stipulated, simple, serrated and glandular leaves. FL 

 white, on simple or compound stalks. Fr. acid and 

 austere, greatly improved and varied by culture, but not 

 of the most wholesome quality. The even surface of the 

 nut is supposed to distinguish Prunus from Ami/gdalus ; 

 that of the latter being full of superficial sinuses and chan- 



VOL. II. 2 A 



