416 



A TEXT-BOOK OF BOTANY. 



-Em 



End' 



ier 



k 



FIG. 243. Red Raspberry (Rubus Idaus): I, Compound fruit consisting of a number 

 of drupelets crowded together on the top and sides of the receptacle; II, transverse section 

 of a drupelet showing'epicarp (epi), hypoderm (Hy), mesocarp (Mes), outer endocarp (F), 

 inner endocarp (F'), testa (S), raphe (R), endosperm (E), and embryo (Em); III, stone 

 including endocarp and seed; IV, stone somewhat magnified; V, style and stigma; VI, 

 surface section of epicarp showing straight hair (h'), sinuous hairs (h) and stoma (sto); 

 VII, transverse section of endocarp and seed showing endocarp (End) consisting of longi- 

 tudinally extended fibers (If), transversely extended fibers (qf), testa (S) consisting of 

 epidermis (,ep), parenchyma or nutritive layer (p), and inner epidermis (iep) ; hyaline 

 layer or nucellus (N), endosperm (E) with aleurone grains (k). After Winton. 



