THE FRUIT. 187 
of the marsh marigold, the columbine, and a good many other 
plants, often produce a fruit which dehisces along a single 
suture, usually the ventral one. Such a fruit is called a 
follicle, Fig. 171. 
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 
illustrated in Fig. 176. 
225. The Capsule. — The dehiscent fruit formed by the 
I Il 
Fic. 172. — Winged Fruits. 
I, elm ; I, maple. 
ripening of a compound pistil is called a capsule. Such a 
fruit may be one-celled, as in the linear pod of the celandine, 
Fig. 176, or several-celled, as in the fruit of the poppy, the. 
-morning-glory and the Jamestown weed, Fig. 176. 
226. Dry Fruits and Fleshy Fruits.—In all the cases 
discussed or described in §§ 213-219 the wall of the ovary 
(and the adherent calyx when present) ripen into tissues 
which are somewhat hard and dry. Often, however, these 
parts become developed into a juicy or fleshy mass by which 
