86 



OBJECT LiEBSUJNiS IJN iJUTAJNl. 



the pericarp is ripe, it may open in some special manner of 

 itself and discharge the seeds ; or it may have no provision 

 for opening, and remain closed until it grows or decays. 



Fig. 270. Achenia of Eiie Anemone, in a head. 



Fig. 271. Fruit of Caraway, consisting of two achenia. 



Fig. 272. Kernel of Wheat, — a sort of aohenium called cariopHs. 



Fig. 273. Fruit of Thistle, — ^^another sort of acheuium, crowned with a pappus 

 which serves as winf;s. 



Fig. 274. Fruit of Elm, — a samara, or winged achenium. 



iig. 275. Fruit of Beech, — two nuts, inclosed in the hnrr. 



Fiy. 276. The Peach (a drupe), — cut open, showing the seed inclosed in its stone, 

 and the stone in the thick pulp. 



Fig. 277. .Fruit of Pigweed, — a oue-seeded pericarp called -airicle. 



Fig. 278. Fruit of India Strawberry,— a icshy torus bearing the achenia outside. 



Fruits that open we will .call dehiscent fruits, and those 

 which do not open, indehisoent. We will first study some of 

 the forms of indeliiscent fruits, arranged as follows : 



16Y. First Division : Fruits indehiscent, one-seeded, dry; 

 namely, Aoheniom, Samara, Glans. . 



166. Of what two parts does the fruif consist 1 Wiat is a dehiscent fruit t 

 indehiscent ? - 



