THE FRUIT 187 
224. The Legume. — A legume is a one-celled pod 
formed by the maturing of a simple pistil, which dehisces 
along both of its sutures, as already seen in the case of 
the bean pod, and illus- 
trated in Fig. 146. 
225. The Capsule. — 
The dehiscent fruit 
formed by the ripening 
of a compound pistil is 
called a capsule. Sucha 
fruit may be one-celled, 
as in the linear pod of 
the celandine (Fig. 146), 
or several-celled, as in 
the fruit of the poppy, 
the morning-glory, and the jimson weed (Fig. 146). 
226. Dry Fruits and Fleshy Fruits. —In all the cases 
discussed or described in Sects. 222-225, the wall of the 
ovary (and the adherent calyx 
when present) ripens into tis- 
sues which are somewhat hard 
and dry. Often, however, 
these parts become developed 
into a juicy or fleshy mass by 
which the seed is surrounded ; 
hence a general division of 
fruits into dry fruits and fleshy 
Fruits. 
Fie. 140. Longitudinal 227. The Stone-Fruit. — In 
Section of a Peach. : 
the peach, apricot, plum, and 
cherry, the pericarp or wall of the ovary, during the 
process of ripening, becomes converted into two kinds of 
Fic. 139. Winged Fruits. 
I, elm; II, maple. 
