594 FABACEAE 
TRIBE IV. TRIFOLIEAE. 
Pods curved or coiled. 7. MEDICAGO. 
Pods straight. 
Pod-valves leathery. i 8. MELILOTUS. 
Pod-valves membranous. 9. TRIFOLIUM. 
TRIBE V. LOTEAE. 
One genus within our range. 10. Lotus. 
TRIBE VI. GALEGEAE. 
Standard with the blade as broad as long or broader, commonly spreading. 
Leaf-blades unequally pinnate. 
Herbs. 
Pods 4-angled or very turgid. 11. INDIGOFERA. 
Pods flattened. 12. CRACCA. 
Shrubs or trees, or woody vines. 
Vines with high climbing woody stems. 13. BRADLEIA. 
Shrubs or trees. 
Flowers in recemes: pods margined on one side. 14, ROBINIA. 
Flowers solitary in the axils: pods marginless. 15. COURSETIA. 
Leaf-blades equally pinnate. 
Pods wingless, more or less compressed. 
Pods several-many-seeded, with thick margins, not in a bladdery 
envelope: 
Standard broad and longer than the keel petals: calyx with acute or 
acuminate lobes. 16. SESBAN. 
Standard narrow and shorter than the keel petals: calyx with broad, 
low lobes. 17. AGATI. 
Pods 2-seeded, the margins thin: seeds remaining in the bladdery inner 
art of the pod when the valves fall away. 18. GLOTTIDIUM. 
Pods 4-sided and 4-winged. 19. DAUBENTONIA. 
Standard with the blades relatively narrow, commonly erect. 
Pod 2-celled, with a perfect partition. 
Pod fleshy, indehiscent. 20. GEOPRUMNON. 
Pod membranous, leathery or woody, dehiscent. 
Pod ovoid to oblong, rarely almost didymous, terete or vertically flat- 
tened, leathery or woody. 21. ASTRAGALUS. 
Pod linear, somewhat laterally flattened, membranous. 22. HAMOSA. 
Pod 1-celled, the partition, if any, rudimentary : 
Lower suture strongly intruded or sometimes both sutures inflexed. 
Both sutures inflexed, each valve of the pod almost circular in cross- 
section. 23. HOLCOPHACOS. 
Upper suture prominent, the pod obcordate in cross-section. 24. TIUM. 
Neither suture intruded. 
Pod membranous, inflated : calyx campanulate: corolla mainly oehro- 
leucous. 25. PHACA. 
Pod woody, not inflated : calyx cylindric: corolla mainly purple. 26. XYLOPHACOS. 
TRIBE VII. DALBERGIEAE. 
Leaf-blades normally 1-foliolate : pods suborbicular, 1-seeded. 27. DALBERGIA. 
Leaf-blades pinnately several-foliolate: pods linear, several-seeded. 28. ICHTHYOMETHIA. 
TRIBE VIII. PSORALEAE. 
Leaf-blades digitately 3-5-foliolate or pinnately 3-foliolate. 29. PSORALEA. 
Leaf-blades mainly pinnately 5-many-foliolate. 
Stamens 9 or 10. 
Corolla of a single petal (standard). 30. AMORPHA. 
Corolla of 5 petals. TIA. 
Corolla with all petals free and distinct. 31. EYSENHARDTIA. 
a SOON with claws of all petals adnate to the filament tube. 32. PAROSELA. 
tamens 5. 
Spikes not subtended by an involucre: calyx-lobes narrow, shorter than 
the tube. 33. PETALOSTEMON. 
Spikes subtended by an imbricated involucre: calyx-lobes bristle-like, 
longer than the tube. 34. KUHNISTERA. 
TRIBE IX. HEDYSAREAE. 
Corolla yellow. 
Flowers perfect. 
Leaf-blades unequally pinnate: stamens diadelphous (5 and 5). 35. AESCHYNOMENE. 
Leaf-blades equally pinnate: stamens monadelphous. 36. ZORNIA. 
Flowers monoecious, at least some of them sterile, others fertile. HES 
Anthers of 2 kinds. 37. STYLOSANTT . 
AU alike. it i 38. CHAPMANIA. 
Corolla white, blue, violet or purple. 
Leaflets stipellate : loments of several joints. 39. MEIBOMIA. 
Leaflets not stipellate: loments of 1-2 joints. 40. LESPEDEZA- 
TRIBE X. PHASEOLEAE. 
A. Keel of the corolla neither curved nor coiled. 
&. Style glabrous or sparingly pubescent below. 
+ i vice noD at the base. 
orolla yellow. 
2 Flowers 1 or 2, or 3 together, axillary to the leaf-like bracts. 41. PITCHERIA. 
