104 



STEEDS AND USEFUL PLANTS. 



Seeds irregularly ovoid witli very thick cctyledons and a straight radicle. 

 Herbs with eveu-pianate leaves having elongated stipules adnate to the 

 petiole, the stipe or peduncle of the lertile tiowers olten elonoatiug sev- 

 eral inches before reaching the earth. (This plant properly belongs to 

 a section of the order not included in our synopsis, and is placed here 

 as a matter of convenience.) 



1. A. hypog^'a, L. Stem procumbent ; leaflets obovate, — the '_om« 

 mon petiole not produced into a tendril. 



Subterranean Arachis. Ground-nut. Pea-nut. 



Fi: LArachide. Gei"n. Die Erd-nuss. Span. Mani. 



7t 



jKrrof !i:\i'\i\t\L S'/m 9 -IS inches long, prostrate or erect, branching, pilose. Leaflets ac 

 itch vo )iu ?iicS J,nd a half long, suhsessile, minutely mucronate at apex, entire aiid bor- 

 dered \\y a i"5 ose nerve; common petioles 1-2 inches long, chann'ell'ed above, pilose. 

 Sterue floivei's, 'i or 2- b or 7, in the upper axils, on long slender pedicels — ^the corolla 

 orange-yellow. 



Cultivated. Native of South America. J"?. July-Septsmber. JV. September - October. 



Fig. 77. The Pea-nut (Arachis hypogjea), exhibiting the manner in which the ovaries, 

 after flowering, bury themselves in the earth, where they ripen. 



