56 



STRUCTURAL BOTANY. 



thick, leathery, separable from the pulpy mass within (Orange, 

 Lemon). 



161. Pepo, an indehisceut, compound, fleshy fruit, with a 

 hardened rind and parietal placentae (Melon). 



162. The pome is a fleshy, indehiscent pericarp, formed of 

 the permanent calyx, containing several cartilaginous (Apple) 

 or bony (Haw) cells. 



163. The pyxis is a many-seeded, dry fruit, opening 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, Larkspur, Silk-grass). 



191 



1S8 



Fndts. 1S5. Etajrio of Rtibus strigosus (Blackberry). 186, Pepo: section of Cucumber. 187, Berry 

 Grape. 188, Pome, Crataejrus (Haw). 189, Pyxis of Jeffersonia. 190, Legume of Pen. 191, Loment of 

 Desmodium. 192, Silique of Mustard. 193, Silicle of Capsella. 



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

 splitting into two valves, but bearing its 1 GO 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. This is also a pod, linear, 2-carpelled, 2-valved, 

 2-celled by a false dissepiment extended between the two parie- 

 tal placenta?. To this false dissepiment on both sides of both 



