FORMS OF FRUITS. 



89 



178. The pyxis is the most curious and singular of all pods. 

 It opens crosswise by a lid, like a snuff-box. Fig. 284: is the 

 likeness of the pyxis of Rheumatism-root, common in Ohio. 

 It is formed of one carpel only. Fig. 282 is the pyxis of 

 Henbane, formed of two carpels. So the pyxis 

 of Poor-man's- weather-glass (Anagallis, Fig. 

 344) is formed of several carpels. 



Fig. 283. A follicle of Milkweed (A<<cUj>i<is). 



Fig. 284. A pyxis, fruit of Jeffersonia, the Rheumatism-root. 



^.""285. A pair of follicles, the fruit of the Dogbane (Apocynum). 



Fig. 286. A legume, open, fruit of the Pea-plant. 



Fig. 287. A jointed legume, or loment, fruit of Desmodium. 



Fig. 288. A silicic, fruit of Shepherd's-pnrse. 



179. Follicle is the name of such pods as those of Colum- 

 bine (Fig. 208), Milkweed (Fig. 2^3), and of Dogbane (Fig. 

 285). They are formed of a single carpel, and open length- 

 wise, on one side only. It is easy to see the resemblance 

 between the follicle and a leaf, the leaf being folded so as to 

 bring its two margins together. (See Fig. 207.) 



180. Legume is the proper name of the Pea pod, Bean pod, 

 &c., of one carpel, one cell, one row of seeds, and commonly 



178. Give the character of the pyxis. How does the pyxis of Henbane 

 differ from that of Jeffersonia ? 



179. Can you describe and name the fruit of Columbine ? How is its leafj 

 character seen ? 



180. Describe and name the Pea pod What is a loment ? 



