LEGUMINOS^. (pulse FAMILY.) 87 



» Stamens monadelphous : anthers of 2 forms. Leaves simple, or palmately compound. 



1. CROTALARIA. Calyx 5-lobed. Legume inflated. Upper stipules decurrent. 



2. LUPINUS. Calyx 2-lipped. Legume flattened. Stipules not decurrent. 



* « Stamens dladelphous : anthers alike. Leaves trifoliolate, rarely palmate or pinnate, the 



earliest ones alternate. 



3. MEDICAGO. Legume membranaceous, curved or coiled, 1 - many-seeded. Flowers 



racemed. 



4. MELILOTUS. Legume coriaceous, straight, rugose or veined, 1 - 4-seeded. Flowers 



racemed or spiked. 



5. TRIFOLIU.M. Legume smooth, membranaceous, 1 - 4-seeded. Flowers capitate. 



6. HOSACKIA. Legume straight, many-seeded. Peduncle 1 - 3-flowered. 



* * * Stamens monadelphous or diadelphous. Legume mostly 1-seeded and indehiscent. 



Plants dotted with small dark glands. Earliest leaves opposite. 



■I- Legume included in the calyx. 



7. PSORALEA. Corolla papilionaceous. Stamens 10, diadelphous : half of the anthers often 



imperfect. 



8. PETALOSTEMOX. StamensS, united into a cleft tube, and adnate to the claws of four of 



the nearly regular petals. 



9. DALEA. Stamens 9 or 10, the tube partly adnate to the claws of the petals. 



■>- -I- Legume exserted. 



10. AMORPIIA. Stamens 10, monadelphous. Wings and keel none. 



* « * ♦ Stamens mostly diadelphous. Legume 1 - many-seeded, 1-celled, 2-valved. Leaves 



pinnate. 

 H- Trees or shrubs. 



11. ROBINIA. Legume flat and thin, margined on one edge. Trees or shrubs. 



12. WISTARIA. Legume nearly terete, coriaceous, contracted between the seeds. Twining 



shrubs. 



^- -f- Herbs. 



13. TEPHROSIA. Calyx 5-cleft. Vexillum large. Legume compressed, many-seeded. Leaves 



unequally pinnate. 



14. INDIOOFERA. Calyx minute, 5-cleft. Vexillum small. Legume terete or angled, 



2 - many-seeded. Leaves unequally pinnate. 



15. GLOTTIDIUM. Calyx truncate. Legume oblong, 2-seeded. Leaves abruptly pinnate. 



16. SESBANIA. Calyx 5-toothed. Legume very long and slender, many-seeded. Leaves 



abruptly pinnate. 

 » » • * # Stamens diadelphous. Legume 2-ceUed lengthwise, or 1-celled, with one of the 

 sutures turned inward. Leaves pinnate. 



17. ASTRAGALUS. Stamens 10, diadelphous. Legume tumid. 



Tribe II. VICIEjE. Stamens diadelphous (9 & 1). Legume 2-valved, not jointed. 

 Cotyledons thick and fleshy, remaining under ground in germination. — Climbing vines ; 

 the petioles of the pinnate leaves ending in a tendril. 



18. TICIA. Style filiform, bearded at the apex, or on the side facing the keel. 



19. LATHYRUS. Style flattened, bearded on the side facing the vexillum. 



Tribe in. HEDYSARE^E. Stamens monadelphous or diadelphous. Legume sepa- 

 rating transversely into 1-seeded indehiscent reticulated joints, or 1-jointed. — Stems not 

 twining. 



* Flowers yellow. 



20. ^SCHYNOMENE. Leaves pinnate. Stamens diadelphous (5 & 5). Flowers perfect. 



21. ZORNIA. Leaves palmately compound. Legume 2 -5-jointed. Flowers perfect. 



22. STYLOSANTHES. Leaves trifoliolate. Anthers of 2 forms. Flowers monoecious. 



23. CHAPMANNIA. Leaves pinnate. Anthers alike. Flowers monoecious. 



* * Flowers white or purplish. 



24. LESPESEZA. Legume 1-jointed. Peduncles axillary. 



