SEXUAL REI'KOD UCTWX. 



305 



pericarp (fig. 354). In the blackberry the re<eptacle be- 

 comes flesh)', and each pistil forms a minute fruit like a 



Fig. 354.— Fruit of the apple. .-J, liaKed lun,dtudin.Hlly ; P. halted trans\ersely. /, 

 pericarp, enclosing seeds ; .j,-, \-ascLilar bundles of the fleshv torus entering k', the 

 caly.\ lea\-es. One half natural size. — After Focke. 



cherry, adherent to its neighbors and to the pulpy torus. The 

 raspberry is like it, e.xcejit that the adherent mass of fruits 

 separates as a cap from a firm torus (fig. 355). 



413. Multiple fruits. — If the flowers form a crowded in- 

 florescence, either dry or fleshy fruits may be closel)- crowded 

 at maturity. Under these conditions flesliy fruits fre(]iiently 

 become adherent, and may thus constittite a inulliple frint 

 quite similar in form to the iriut formed by the aggregated 



Fiii. 355 



Fig. 3S5. — Vertical section of a flower of raspberry {Ruhus idcFiis), showing numerous 

 pistils wliich form the caplike fruit over the enlarged torus: stamens. cor<dla. and 

 calyx all united at base. Alagnified about 3 diani — After Kerner. 



Fig. 3^6. — A, pistillate flower ciuster of white inulbeny; />', multiple fniit from same. 

 Natural size.— After Eaillon. 



