PERICARPS 



151 



260. Berries of the snowberry. 



a follicle (Fig. 244). If these pistils were united, a single 

 compound pistil would be formed. Columbine, peony, nine- 

 bark also have folli- 

 cles; milkweed, also 

 (Fig. 245). 



290. A 1-loculed 

 pericarp which de- 

 hisces on both edges 

 is a legume. Peas 

 and beans are typi- 

 cal examples (Figs. 

 246, 247): in fad. 

 this character gives 

 name to the pea-fam- 

 ily, Leguminosae. 

 Often the valves of the legume twist forcibly and expel 

 the seeds, throwing them some distance. The word p<>d 

 is sometimes restricted to legumes, but it is better t<> use 

 it generically (as in 287) for all dehiscent pericarps. 



291. A compound pod dehiscing pericarp of two or 

 more carpels is a capsule (Figs. 248, 249). There are 



Mime capsules (if one locule, hut 

 t hey were compound when young 

 (in the ovary stage) and the 

 partitions have vanished (Fig. 

 250) . Sometimes one or more 

 of the carpels are uniformly 

 crowded oul by the exclusive 

 growl li of oilier carpels ( Pig. 

 25 1 I . The seeds or pari s which 

 261. Eggpiani fruit*, i of .,,.,. crowded <>u! are said to be 



large berries. 



aoortt a. 



292. There are several ways in which capsules dehisce or 

 open. When thej break along the partitions (or Bepta), 



I lie iiKde is known as scpticidal dehiscence; Pig. "_'">2 



