NO. 7] Pulse ( Leguminbsce). 37 



loment, z\ e., a jointed pod with one or more cross 

 divisions, and one seed in each joint. 



Herbaceous vines, one species (the Butterfly-Pea, Cli- 

 toria Mariana} woody at base. 



GUIDE TO GENERA. 



(a) Leaflets, three. Tendrils, none. Pod, either jointed, 

 with one seed for each joint, or one-celled and one- 

 seeded. 

 (b) Pod, jointed, with one seed to each joint, (i) Des- 



modium (Bush-Trefoil). 

 (b) Pod, one-celled and one-seeded. (2) Lespedeza 



(Bush-Clover). 



(a) Leaflets, three. Tendrils, none. Pod, neither jointed 

 nor one-seeded, excepting sometimes in the lower 

 and usually underground pods of the Hog-Peanut 

 (No. 8). 



(b) Standard (the large upper petal), curved back, and 



spreading. Seeds, four to ten, oblong with squared 



en'ds, kidney-shape, or four-sided. (3) Phaseolus 



(Kidney-Bean). 



(6) Standard, erect. Vine smooth, ascending. (4) Cli- 



toria (Butterfly-Pea). 

 (#) Standard, erect. Vine hairy, ascending. (5) Amphi- 



carpaea (Hog-Peanut). 



(b) Standard, bending somewhat inward. Vine smooth 

 or minutely downy, prostrate. (6) Galactia (Milk- 

 Pea). 

 (#) Leaflets, five or seven. Tendrils, none. (7) Apios 



(Ground-Nut). 



(a) Leaflets, an even number. Tendrils or bristles, pres- 

 ent at the ends of the leaves. 



(b) Leaflets, eight to twenty-four. Style, thread-like, 

 bearded by a tuft or ring of hairs at the apex, 

 especially on the outside (toward the keel). (8) 

 Vicia (Vetches). 



(b) Leaflets, six to twelve. Style, flattened and bearded 

 down the inner side (toward the free stamen. (9) 

 Lathyrus (Vetchlings). 



