LEGUMINOS.?;. (rULSE FAMILY.) 87 



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



1. CROTALAUIA. Calyx 5-lobed. Legume inflated. Upper stipules deeurrent. 



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



« « 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. MELILOTDS. 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 diadelplious. Legume mostly 1-seeded and inde'aiscent. 

 Plants dotted with small dark glands. Earliest leaves opposite. 



-1- Legume included in the calyx. 



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



imperfect. 



8. PETALOSTEMOX. Stamens6 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. AMORPIIA. Stamens 10, monadelphous. Wings and keel none. 



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



pinnate. 

 1- Trees or shrubs. 



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



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



shrubs. 



1- -I- Herbs. 



13. TEPHR03IA. Calyx 5-cIeft. Vexillum large. Legume compressed, many-?eeded. Leaves 



unequally pinnate. 



14. IXDIGOFERA. Calyx minute, Scleff. Vexillum small. Legume terete or angled, 



2 - many -seeded. Leaves unequally pinnate. 



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



16. SESB.\XIA. Calyx 5-toothed. Legume very long and slender, many-seeded. Leaves 



abruptly pinnate 



♦ # * * * Stamens diadelphous. Legume 2-celIed lengthwise, or l-celled, with one of the 



sutures turned inward. Leaves pinnate. 

 1". ASTRAGALUS. Stamens 10, diadelphous. Legume tumid. 



Tribe II. VICIE.3E. 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. LATIIYKUS. Style flattened, bearded on the side facing the vexilkim. 



Tribe in. HKOYSARE^a?^. Stamens monadelphous or diadelphous. Legume sepa- 

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

 twining. 



* Flowers yellow. 



20. .j;SCHYXOMEXE. 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. ClIAPMANXIA. Leaves pinnate. Anthers alike. Flowers monoecious. 



« * Flowers white or purphsh. 



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



