THE FRUIT. 



139 



LESSON XXVII. 



THE FEUIT— DEHISCENT FRUITS: PODS. 



324-326. Fruits defined. 327. Pod. 328. Legume. 329. Loment. 

 330. Folliclp. 331. Boll, or Capsule. 332. Pyxis, Pvxidium. 333. 

 Silique. 334. Silicle. 335-341. Dehiscence. 



324. The Fruit is the ripened spore (Cryptogamia), seed 

 (Gymno.sperms), or ovary (Angiosperms), with all other 

 parts of the flower adherent to it. Fruits are : I. Dry when 

 the pericarp has no pulp : Pea-pod ; II. Fleshy when it has 

 pulp : Melon, Peach ; III. Dehiscent when it opens : Pea- 

 pod ; IV. Indehiscent when it remains closed : Melon, 

 Peach. 



325. A Simple Fruit is the product of a single flower : 

 Pea, Peach. A Multiple Fruit is the product of an inflores- 

 cence : Mulberry, Pine -apple. 



326. Simple Fruits are classed as : I. Pods, usually de- 

 hiscent; II. Nuts, Drupes, Berries, 

 usually indehiscent. 



D U 



Fig. 197. — A, legume of Pea (Pisum sul.vuin) : sd, dorsal suture; sm, vential 

 suture ; w, m, valves. B, loment of Hedysamm coronarium,, dehiscence first cir- 

 cumscfssile ; C, then valvular and sntural. D. pyxidium of Hyoscyamus niger. 

 E, boll of Poppy (Papacer Rhieas). F, boll of Corn Cockle {Agrostemma 

 Gitkago). 



Dehiscent Fruits: Pods. 



327. A Pod is a dry dehiscent pericarp, one- or many-celled, one- or 

 many-seeded. Pods are thus classed : 



