PULSE FAMILY 127 
A 
Flower actinomorphic, small. Stamens hypogynous. Leaves twice pinnate. 
Petals not united to each other. Stamens 5 or 10. Pod smooth. 
Desmanthus, I 
Corolla gamopetalous, 5-cleft. Stamens 8 or 10. Pod minutely 
prickly or rough. Schrankia, II 
Fig. 21. Pulse Family. Papilionaceous 
ji corolla of sweet pea (Lathyrus odoratus) 
| A, side view. 3B, front view: s, standard; 
Ww, w, wings; k, keel 
B 
Trees. Flowers somewhat or not at all papilionaceous, sometimes almost 
actinomorphic. The upper petal inside the others in the bud. Stamens 
10 or less, usually not united to each other, borne on the calyx. 
Flowers imperfectly papilionaceous. Leaves simple. Cercis, V 
Flowers not papilionaceous. Thornless. Gymnocladus, III 
Flowers not papilionaceous. Thorny. Gleditsia, IV 
Cc 
Fic. 22 
A, stamens and pistil of sweet pea (magnified); B, fruit; C, part of fruit, 
showing one seed 
