110SACE.E. 



405 



and exterior or dorsal, capped by obturators formed by the thickened 

 placenta.' The fruit is a drupe, at the base of which is seen the 

 scar of the receptacle and calyx. In Primus proper, the epicarp of 



Prunm Padus {Bird Cherry). 



Prwnus Mahaleb. 





this drupe is glabrous, often covered with a whitish bloom ; the meso- 

 carp is thin and fleshy. The endocarp forms a compressed ovoidal 



475, 476), thus becoming analogous to those of little flowering Plum-trees of our parterres, es- 

 Nuttallia or several SpireecB OT QuillaJecB. Some- pecially P. triloba LiXDi. Hence Cahkiere 

 times these carpels are fonned like the normal ( Eei: Eortic. (1862), 91, Icon.) proposed the 



Fig. 475. 



ones, and possess a biovulate ovary ; sometimes 

 as in the double Cherries of our gardens, they 

 are more or less leaf-like, opened out and hyper- 

 trophied. The same thing often occurs in the 



Fig. 476. 



genus Amygdalopsis (" est forma monstrosa 

 inepte pro genere hahita," B. H., Gen., 610). 



1 The ovules have two coats ; above them the 

 placenta forms two more or less prominent and 



