LEOUMINOS^l. (rULSE FAMILY.) 87 



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



1. CKOTALAKIA. Calyx 5-lobod. Legume inflated. Upper stipules decurrent. 



2. LUPIN US. Calyx 2-lipped. Legume flattened. Stipules not decurrent. 



* * Stamens diadelphous : 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. MELILOTL'S. Legume coriaceous, straight, rugose or veined, 1-4-seeded. Flowers 



racemed or spiked. 



5. TRIFOLIUM. 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-seedcd and indehiscent. 



Plants dotted with small dark glands. Earliest leaves opposite. 

 *- Legume included in the calyx. 



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



imperfect. 



8. PETALOSTEMON. Stamens5, 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. 



*- — Legume exserted. 



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



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



pinnate. 

 ■<- Trees or shrubs. 



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



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



shrubs. 



«- «- Herbs. 



13. TEPIIROSIA. Calyx 5-cleft. Vexillum large. Legume compressed, many-deeded. Leaves 



unequally pinnate. 



14. IXDIGOFERA. Calyx minute, 5-cleft. Vexillum small. Legume terete or aDgled, 



2 - many-seeded. Leaves unequally pinnate. 



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



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



abruptly pinnate. 

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

 sutures turned inward. Leaves pinnate. 



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



Tribe IT. 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. VICIA. Style filiform, bearded at the apex, or on the side facing the keel. 



19. LATHY&US. Style flattened, bearded on the side facing the vexillum. 



Tribe III. HEDYSAREiE. Stamens monadelphous or diadelphous. Legume sepa- 

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

 twining. 



* Flowers yellow. 



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



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



22. BTTLOSANTHS& Leaves trifoliolate. Anthers of 2 forms. Flowers monoecious. 



23. CIIAl'MAXXIA. Leaves pinnate. Anthers alike. Flowers monoecious. 



» * Flowers white or purplish. 



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



