94 LEGL'MINOS.T=:. (I'ULSE FAMILY.) 



4. MKLILOTUS. Lefnuiie coriaceous, straiglit, rugose or veined, 1 - 4-geeded. Flowers 



ra<"eim'd or Bpiki-d. 



5. TRIFOLIUM. Legume emootli, nieiubranaceous, 1 -4-8eeded. Flowers capitate. 



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



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



Plants dotted with small dark glands. Earliest leaves opposite. 



t- Legume included in the calyx. 



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



often imperfect. 



8. PETALOSTEMON. Stamens 5, 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. 



■h- -I- Legume exserted. 



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



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



pinnate. 

 ■1- Trees or s'arubs. 



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



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



ing shrubs. 



■I- ■*- Herbs. 



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



Leaves unequally pinnate. 



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



2 - many-seeded. Leaves unequally pinnate. 



15. SESB.^NIA. Calyx 5-toothed. Legume very long and slender, many-seeded. Leaves 



abruptly pinnate. 

 « « « « « Stamens diadelphous. Leg^ume 2-celled lengthwise, or 1-celled, with one of the 



sutures turned inward. Leaves pinnate. 

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



Tbibe II. VICIE^E. 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. 



17. VICIA. Style flliform, bearded at the apex, or on the side facing the keel. 



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



Tribe III. HEDYSARE^. Stamens monadelphous or diadelphous. Legume sepa- 

 rating transversely into 1-seeded indehiscent reticulated joints, or 1-jointed. — Stems 

 not twining. 



* Flowers yellow. 



19. .ESCHYNOMENE. Leaves pinnate. Stamens diadelphous (5 & 5). Flowers perfect. 



20. ZORNIA. Leaves palmately compound. Legume 2 - 5-jointed. Flowers pei feet. 



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



22. CHAPMAJTIA. Leaves pinnate. Anthers alike. Flowers monoecious. 



* • Flowers white or purplish. 



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



24. DESMODIUM. Legume 2- C-jointed. Bristly. Racemes terminal. 



Tbibe IV. PHASEOLE-^. Stamens monadelphous or diadelphous (9 & 1). Legume 

 2-valved, not jointed. Cotyledons thick and fleshy ; usually raised above ground in 

 germination. — Chiefly twining vines. 



* Ovary 1 - 2-ovuled. 



25. RHYXCHOSIA. Legume oblong. Flowers yellow. Leaves trifoliolate. 



