Papilionatoe LEGUMINOSiE 3 



§ 4. Herbs, sometimes shrubby below, not climbing, or 

 small trees. Leaves imparipinnate, leaflets 1-3, 

 or numerous (in ^schytwmene), or digitately 2-4- 

 foliolate. Pod jointed; joints 1-seeded, usually 

 separating. 



Leaves with numerous leaflets 7. ^schynomcnc. 



Leaves 1-3-foliolate with scarcely any common 



petiole; stipules spinescent. Small trees .. . 6. Brya, 

 . Leaves .3-foliolate ; leaflets without stipels. 



Stipules united to the leaf -stalk 8. Stylosanthes. 



Leaves digitate with 2 or 4 leaflets 9. Zornia. 



Leaves 3-foliolate ; leaflets with stipels 10. Dcstnodium. 



[Leaves with 1 large leaflet; petiole winged D.triquetrum.} 



[Leaves with one 2-lobed leaflet Lourea.'] 



[Leaves with 1 leaflet ; calyx dry, stiff Alysicarpus.] 



[§ 5. Low-growing herbs. Leaves abruptly pinnate. 

 Flowers 1 or more, crowded in the lower axils. 

 Pod burying itself in the earth Arachis.] 



[§ 6. Climbing herbs. Leaves abruptly pinnate ending 

 in a- tendril; leaflets without stipels. Stipules 

 semisagittate. Flowers 1 or 2 together in the 

 axils. Pod 2-valved Vicia.} 



§ 7. Shrubs with twining branches. Leaves abruptly 

 pinnate, with the end of the petiole produced and 

 bristle-like ; leaflets without stipels. Flowers in 

 clusters along axillary and terminal racemes. Pod 

 2-valved 11. Abnis. 



§ 8. Herbs or shrubs, twining (rarely erect, or prostrate, 

 or trees). Leaves pinnately 3- (5-7-) foliate ; leaflets 

 with stipels. Flowers in axillary racemes, usually 

 2 or more in clusters along the rhachis, the 

 racemes sometimes reduced to one flower or a few 

 clustered in the axils. Pod 2-valved, 



Trees. Flowers red 15. Erythrina. 



Herbs or shrubs. 



Standard much larger than the other petals 

 and flat. 

 Bracteoles longer than the calyx or nearly 



as long 12. Centrosema. 



Bracteoles less than half as long as the 



calyx 13. Clitoria. 



Standard shorter than the other petals 16. Mttcuna. 



Standard not much larger nor smaller than 

 the other petals. 



Keel forming a complete spiral 20. Phaseolits. 



Keel not forming a complete spiral. 



Style hairy along the inner side above. . • 



Stigma oblique or lateral.... 21. Vigna. 



[Stigma subglobose on inner side of 



style. Root tuberous PachyrrMzus.'] 



[Stigina small, terminal. Pod rough 

 with warty projections along the 

 margins Dolichos.^i 



B 2 



