92 LEGUMINOSjE. (pulse family.) 
10. Desmodium. Stamens diadelphous (9 and 1) sometimes monadel- 
phous. Pod several-jointed. Flowers perfect. Leaflets 3. 
11. Lespedeza. Stamens diadelphous: anthers uniform. Pod 1- 
(rarely 2-) jointed. Flowers often polygamous. Leaflets 3. 
12. Stylosanthes. Stamens monadelphous: anthers of 2 forms. 
Pod 1-2-jointed. Flowers polygamo-moncecious. Leaf¬ 
lets 3. 
Tribe 4. LOTEiE. — Stamens monadelphous or diadelphous (9 
and 1). Pod continuous, 1-celled, or else 2-celled lengthwise. 
Cotyledons becoming green leaves in germination. — Not twin¬ 
ing, climbing, nor tendril-bearing. 
Subtribe 1. Astragaleje. — Stamens diadelphous. Pod with one 
or both the sutures tumid, or projecting inwards, so as often 
to become partly or completely 2-celled lengthwise. Leaves 
pinnate. 
13. Astragalus. Pod partly or quite 2-celled by the projection of 
the lower (dorsal) suture. 
14. Phaca. Pod 1-celled, with the upper (seed-bearing) suture tumid 
or projecting, turgid. Keel obtuse. 
Subtribe 2. Galege;e. — Stamens often monadelphous. Sutures 
of the pod not turned inwards. Leaves commonly pinnate or 
pinnately 3-foliolate, the earliest ones opposite. 
* Pods linear, flat, several-seeded. 
15. Robinia. Stam. diadelphous. Shrubs or trees: leaflets stipellate- 
16. Tephrosia. Stam. scarcely diadelphous. Stipelles none. 
* * Pods 1 - 2-seeded, short, scarcely dehiscent. 
\J 17. Amorpha. Stam. monadelphous merely at the base. P e * a 
one! 
V 18. Psoralea. Stam. diadelphous. Corolla truly papilionaceous, 
v/* 19. Petalostemon. Stam. monadelphous, only 5 ! Corolla scarctl) 
papilionaceous. 
Subtribe 3. Trifolie.e. — Stamens diadelphous. Leaves P a ^ 
mately (sometimes pinnately) 3 - 5-foliolate, the earliest ones 
alternate. 
20. Trifolium. Flowers capitate. Pods membranous, small. 
21. Melilotus. Flowers racemed. Pods coriaceous, wrinkled. 
22. Medicago. Flowers racemed or spiked. Pods curved or coiled. 
Subtribe 4. Geniste^. — Stamens monadelphous: anthers of 2 
forms. Leaves simple or palmately 3-15-foliolate. 
23. Genista. Keel straight. Pod flattened. Leaves simple. 
24. Crotalaria. Keel scythe-shaped. Pod inflated. Leaves simple- 
25. Lupinus. Keel scythe-shaped, pointed. Pod flattish, knotty. 
Leaves 1 - 15-foliolate. 
