50 Pulse (Leguminbscz). [No. 7 



similar, and partly enfolded by the reverse egg-shaped 

 standard. Calyx, tubular, or bell-shape, with four 

 (sometimes five) short and nearly equal teeth that 

 of the upper flowers about one sixth of an inch in 

 length. Bractlets, minute, or lacking. Stamens, in 

 two sets, in the upper unfruitful flowers ; in the lower 

 ones, wanting, or, if present, not in sets. Style, not 

 bearded. Seed-cases^ of the upper flowers, smooth with 

 hairy margins ; of the lower ones, hairy. August, 

 September. 



Leaflets, three, very thin, one half inch to three inches in 

 length, three quarters as wide, somewhat egg-shape, 

 those at the sides with the base oblique. Stipels 

 present. 



Pods, of the upper flowers, if present, somewhat curved, 

 with a short stalk, and with three or four dark seeds ; 

 those of the lower flowers, one inch in length, hairy, 

 usually beneath the ground, reverse egg-shape or 

 pear shape, with one large flattened brown seed. A 

 legume. 



Found, common, in rich, damp soil, from Canada to Mis- 

 sissippi and Florida. 



An ill-named vine, slender, twining, hairy, perennial, 

 herbaceous ; the stem much branched, rough in one direc- 

 tion, four to eight feet long. 



Resembling Fig. 24. Pitchers' Hog-Peanut. A. Pitcheri, 

 T. and G. 



This species differs from the preceding (A. commosa) 

 chiefly in the following items : 



