PULSE FAMILY 



127 



Flower actinemorphic, 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 

 corolla of sweet pea (Lathyrus odoratus) 



A, side view. B, front view: s, standard; 

 w, w, wings; k, keel 



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 



FIG. 22 



A, stamens and pistil of sweet pea (magnified) ; B, fruit ; C, part of fruit, 

 showing one seed 



