55-67.] FOEMS OF THE PERICARP. 67 



160. Hesperidium, a succulent, many-carpelled fruit; 

 the rind thick, leathery, separable from the pulpy mass 

 within (Orange, Lemon). 



161. PepOj an indehiscent, compound, fleshy fruit, 

 with a hardened rind and parietal placentae (Melon). 



162. The pome is an indehiscent pericarp, formed 

 of the permanent calyx and fleshy receptacle, con- 

 taining several cartilaginous (Apple) or bony (Haw) 

 cells. 



163. The pyxis is a many-seeded, dry fruit, open- 

 ing like a lid by a circumscissile dehiscence (Plantain, 

 Henbane, Jeffersonia). 



164. The follicle is a single carpel, 1-celled, many- 

 seeded, opening at the ventral suture (Columbine, Lark- 

 spur, Silk-grass). 



*165. The legume, or pod, is a single carpel, 1-celled, 

 usually splitting into two valves, but bearing its 1 oo 

 seeds along the ventral suture only, in one row, as in 

 the Bean and all the Leguminosse. It is sometimes 

 curved or coiled like a snail-shell (Medicago). The 

 loment is a jointed pod, separating across into 1-seeded 

 portions (Desmodium). 



166. Silique. A pod, linear, 2-carpelled, 2-valved, 

 2 -celled by a false dissepiment extended between the 

 two parietal placentae. To this false dissepiment on 

 both sides of both edges the seeds are attached (Mus- 

 tard). The silicle is a short silique, nearly as wide as 

 long (Shepherd's Purse). The silique and silicle are 

 the peculiar fruit of all the Cruciferae. 



167. Capsule (casket). This term includes all other 

 forms of dry, dehiscent fruits, compound, opening by 

 as many valves as there are carpels (Iris), or by twice 

 as many (Chickweed), or by pores (Poppy). 



