\n 



KEY TO THE FAMILIES AND GENERA 



c. Pod straight, thick-compresswi. trans- 

 ver>-fly septate inside between the 



5<,„is 9. Slri/phno- 



cc. Poii straiBht. falcate or variously twisted, [deuilron 



tliick-iiinipresseil or subterete, usually 



septate inside between the seeds 10. Prosopis, 



BB. The pods J-valveil. it^ee also bbb. ) 



c. Pod slraiiitu or aroh«l, flat; valves entire, 



continuous within: shrubs or trees 11. Pipladema. 



cc. Pod obli.iuely oblonit, deflcsed from the 

 stipe: herbs or diffuse sub-shrubs, pros- 

 trate or tloatinR 12. Xepluma. 



BBB. The poif flat, with thickened persistent 

 continuous suturi*. the vnlves trans- 

 versely jointed between the sutures, the 

 joints 1-seedcd 13. Enlmla 



4. Mimosa Tribe. 



A. Pods provided with a replum, i. e., a frame- 

 like placenta, which remains after the 

 valves have fallen away from it. 



B. Valves wider than reolum 14. Mimosa. 



BB. Valves narrower than the replum or hardly 



vcidQT 15* Schrankia. 



.*.». Pods 2-vaived in the ordinary fashion 16. Leuarna. 



5. Podalyria Tribe. 



A. Keel-petals free or shghtly connate: foUage 



herbaceous. ,„ „,, 



B. Pod Unear or oblong-inflated IV. Thermopsis. 



BP. Pod globose or ovoid, turgid or inflated. . . . .18. Baplisia. 

 AA. Keel-petals connate on the back: foliage 

 mostly leathery. 

 B. Ovules 4 or more. , „ ^ , , • 



c. Keel about as long as the wnngs 19. Oxylobium. 



cc. Keel much shorter than wings 20. Chorufvia. 



BB. Ovules 2. , ,,„,,-■■ 



c Pod indehiscent: calyx .-shortly o-toothed.. 21. \ imiiiana. 

 cc. Pod 2-valved: calyx 3-(id, or bilabiate 22. PuUenxa. 



6. Genista Tribe. 



A. Stamens coalesced into a shciith which is split 

 above the middle. 

 B. Seeds slrophiolate. „., /i, i 



c. Lvs. simple or reduced to mere scales 23. 7 emple- 



\toina. 



cc. Lvs. pinnate: Ifts. 3 24 Goodia. 



BB. Seeds not slrophiolate 25. Crotalana. 



AA. Stamens coalesced into a closed tube. 

 B. Seeds not St rophiolate. 



c. Calyx-lobes or lips much longer than the 



tube 26. Lupinus. 



cc. Calyx-iobes or -teeth shorter than the 

 tube, rarely somewhat longer. 

 D. Lfts. 3. „, , , 



E. Pod stalked 27. Laburnum. 



EE. Pod sessile. 



F. Claws of petals adnate to stam- 



inal tube 28. Pdleria. 



FF. Claws of petals free. 



o. Shrubs unarmed: upper calyx- 

 lobes distinct 29. Adenomr- 



oo. Shrubs usually spinescent: calyx Ipus. 



short, truncate 30. Calycutome. 



DD. Lfts. usually all wanting, rarely 3 or 1: 

 shrubs with spiny or rush-hke 

 branches. 



E. .Shrub with rush-like branches 31. Apartium. 



EE. Shrubs spiny or unarmed: lfts. re- 

 duced to 1 or 0, rarely 3. „„ « 



F. Fls. yellow: calyx not inflated 32. Oentsta. 



FF Fls. violet or bluish; calyx inflated: 



spiny shrub 33. Erinarra. 



BB. Seeds strophiolale. 



c. Calyx colored, 2-parted; the upper segms. 

 2-to<jthed. lower 3-toothcd: leafless 

 ehrubs, the branchlots and petioles 



transformed into spines 34. Ulei. 



CC. Calyx with the 2 upper lobes or teeth con- 

 nate or free, the 3 lower connate into a 

 lower lip 35. Cytim". 



7. Sophora Tribe. 



A. Fl. with petals all nearly alike 36. Cadia. 



AA. Fl. distinctly papihonaceous. 



B. Pod 2-valved 37. Ca«tano- 



BB. Po<J indehiflccnt or at most tardily dehiscent \Hptrmum. 



to a slight extent. „„ „ , 



c. The pod moniliform 38. Sophora. 



cc. The pofl not moniliform, linear. „,. « , 



D. Color of fls. yellow in axillary racemes. .39, Calpurnia. 

 DD. Color of fls. white, panicled. 



E. Winter-buds inclosed in the base of 

 the enlarged petiole: panicle loo.se, 



dr>x.>pinK 40. Cladraalis. 



EE. Winter-buds free: panicle dense, 



uprigtit 41. Maackia. 



8. Hedysarum Tribe. 



A. Stamens all free among themselves 42. .idesmia. 



AA. Stamens all connute in a closed tube 43. Araclns. 



AAA. Stamens nearest the standard free or connate 

 with the others only at the base or at the 

 middle. 

 B. Filaments all dilated above or only alter- 



ziate ones. . . „ .., 



c. Keel obtu.se 44. Ormlhoput. 



cc. Keel acute or beaked 45. toronlUa. 



BB. Filaments normal. 



c. Wings short or very short, rarely as long 

 as the keel: lfts. not provided with 

 minute stipules. 

 D. Pod flat or compressed. 



E. Joints many, rarely 2: standard-sta- 

 men free 46. Hedysarum. 



EE. Joints 2: standard-stamen connate 



with others at middle 47. Oiwhrychis. 



DD. Pod thickish, subterete 48. AUtagi. 



cc. Wings as long as or longer than the keel: 

 partial petioles of lfts. bear minute 

 stipules (except in Lespedeza 0). 

 D. Pod indehiscent, rarely opening at the 



lower suture; joints flat 49. Desmodium, 



DD. Pod of about 4 small, distinct, 1-seeded, 

 smooth, veined joints included in 



the calyx 50. Urana. 



DDD. Pod 1-seeded, indehiscent; no joints 51. Lespedeza. 



9. Dalbergia Tribe. 



A Fr drup.iceoiis, clolmse or ovoid, indehiscent, 



the endmarp WDody 52. .indira. 



AA. Fr. not dnipareous. 



B. Lfts. mostly alternate. 



c. .\nthers vi-rsatilc, the loculcs parallel, 



loni;itudin:illy dehi.scent 53. Tipuaiia. 



cc. .\nther3 small, erect, didymous, the 

 locules placed back to back; generally 



dehiscent at apex by a short crack 54. Dalbergia. 



BB. Lfts. opposite. . r^ D- 'J- 



c. Pod longitudinally 4-wmged 65. .f'tscidm. 



cc. Pod with a narrow wing along the upper 



suture or both sutures 56. Derns. 



10. Lotus Tribe. 



A. Pod indehiscent or tardily 2-valved 57. Anthyllis. 



AA. Pod 2-valved. , . . , i 



B. Calyx-lobes usually longer than tube; keel 



rostrate 58. Lotus. 



BB. Calyx-teeth shorter than tube; keel obtuse. .59. Hoaackia. 



11. Vicia Tribe. 



A. St. woody: infl. subterminal; stamens 9, the 



standard-stamen absent 60. Abrua. 



t.K. St. herbaceous: fls. solitary or racemose m the 

 axils; stamens 10. 



B. Wings adherent to the keel ,v; ■*'l- f'^'^V .-i i 



(See article Lentil.) 



BB. Wings free or only slightly adherent. 



c. Sheath of stamens obUque at the mouth; 



style slender, bearded or hairy only at 



the apex or all around the upper part. . .62. Vicia. 



cc. Sheath of stamens equal at the mouth. 



D. Calyx-lobes leafy; style rigid, dilatetl 



above and the margins reflexed and 



joined together so that it becomes 



flattened laterally; bearded down the 



inner edge -63. Piaum. 



DD. Calyx-lobes not leafy; style flattened 

 above on the back and front; bearded 

 down one face 64. Lathyrus. 



12. Phaseolus Tribe. 



A. Style longitudinally bearded above on the 

 inner side or rarely pilose only around the 

 stigma; petals normal or the keel long- 

 beaked or spiral: infl. nodo8e-racemo.se. 

 B. Calyx-tube not longer than lobe. di.„„„).,. 



c. Keel spiral ■ • ■ 65- Phaseolus. 



cc. Keel obtuse or arched beaked. 



D. Stigmastrongly oblique or introrse... ..Ob. vigna. 

 DD. Stigma subglobose on inner face; style 



flattened out at apex 67. Pachyrhizut. 



DDD. Stigma small, terminal; style fihform 



or subulate at apex 68- Duhchos. 



BB. Calyx-tube cylindrical, longer than lobes .... 69. t (i(oria. 

 AA. Style not bearded. 



B. Stanilard-stamen free only at the very base, 

 thence connate with the rest into a closed 

 tube; calyx mostly 4-lobed. 

 c. Calyx bell-shaped. 



D. Pod broad, the upper suture thickened 



or 2-winged 70. Bioclea. 



DD. Pod linear, narrow or flat 71. / uerana. 



