Leguminosae 553 



26A. Flowers 15-20 mm. long; nodes of racemes thickened; bracts caducous 30. Piieraria 



26B. Flowers 5-8 mm. long; nodes scarcely thickened; bracts persistent 31. Glycine 



246. Stamens diadelphous; flowers and legumes of one or two forms. 



27A. Flowers and legumes monomorphic 32. Galactia 



27B. Flowers chasmogamic and cleistogamic, the legumes dimorphic 33. Amphicarpaea 



16B. Stems erect or decumbent, rarely woody twining plants with many leaflets. 

 2 8 A. Leaflets 3 to numerous. 

 29A. Leaflets entire. 



30A. Hairs attached above the base; anthers mucronate 34. Indigojera 



30B. Hairs basally attached (attached above the base in some species of Astragalus) ; anthers not mucronate at apex. 

 31 A. Twining woody plants. 



32A. Racemes terminal on short lateral shoots; flowers purple or white; standard with a callus on each side above 



the base 35. Wisteria 



32B. Racemes a.\illary; flowers yellowish green (in ours); standard without callosity on each side 36. Milletia 



3 IB. Herbaceous to woody, not twining, erect or decumbent plants. 



33A. Tree; introduced and naturalized 37. Robinia 



33B. Herbs or semishrubby plants. 



34A. Leaflets 5, the lower 2 stipulelike; flowers yellow 38. Lotus 



34B. Leaflets rather many; flowers purplish, rarely yellowish. 



35A. Keel obtuse at apex 39. Astragalus 



35B. Keel with an acute appendage or point at apex 40. Oxytropis 



29B. Leaflets minutely toothed. 



36A. Leaves digitately compound; leaflets 3-7 41. TrijoUtim 



36B. Leaves piimatcly compound; leaflets 3. 



37A. Legumes small, contorted; racemes rather short 42. Medicago 



37B. Legumes small, ovate, straight 43. Melilotus 



28B. Leaves simple, consisting of a single leaflet, rarely digitately 3-foliolate in the introduced species 44. Crotalana 



1. ENTADA Adans. Modama Zoku 



Tendril-bearing woody vines; leaves bipinnate, the uppermost pair of leaflets reduced to tendrils; racemes solitary or in pairs; 

 flowers polygamous, yellowish, sessile, small; calyx toothed; petals equal, narrow, slightly curved; stamens 10, free, the anthers 

 terminated by a gland; legumes large, flat, woody, jointed, rather many-seeded. About 20 species, widespread in the Tropics. 



1. Entada phaseoloides (L.) Merr. E. scandens Benth.; lowish green, about 6 mm. long; legumes 30-60 cm. long, 



Lens phaseoloides L. Modama. Evergreen, woody vine; 7-10 cm. wide, curved, constricted between the seeds which 



leaves petioled, the rachis ending in a tendril, the pinnae 4, the are 5 cm. in diameter. Evergreen forests near seashores; 



leaflets lustrous, coriaceous, 2-A on each pinna, oblong to obo- Kyushu (Yakushima) ; rare. Ryukyus, Formosa, and 



vate, 3-8 cm. long, subacute to obtuse; racemes pedunculate. Tropics of the New and Old Worlds, 

 usually aggregated in a terminal panicle; flowers sessile, yel- 



2. ALBIZIA Durazz. Nemu-no-ki Zoku 



Trees or shrubs without spines; leaves bipinnate, often with cup-shaped glands on petioles or on the rachis, the stipules various; 

 inflorescence of globose to narrow heads, usually in panicles; flowers 5-merous, bisexual or polygamous; calyx tubular, 5-toothed 

 at apex; corolla funnel-shaped, the segments valvate in bud; stamens numerous, exserted, the filaments connate at base into a 

 tube; legumes broadly linear, flattened. About 50 species, widespread in the Tropics. 



lA. Leaflets 36—58 on each pinna, narrowly semiovate or broadly and obliquely lanceolate, 10-15 mm. long, 2.5-4 mm. wide; pinnae 10-25 



on a leaf \. A. julibrissin 



IB. Leaflets 30—40 on each pinna, semiovate, 15-20 mm. long, 5-7 mm. wide; pinnae 8-10 on a leaf 2. A. glabrior 



1. Albizia julibrissin Durazz. Mimosa julibrissin exserted, 35-40 mm. long; legumes glabrous, short-stiped, 



(Durazz.) Scop.; M. spcciosa Thxinh., non Jacq.; Acacia nemti 10-13 cm. long, 17-18 mm. wide, 10- to 15-seeded. June- 



Willd.; Albizia nemu (Willd.) Benth. Nemu-no-ki. Dc- July. Woods and riverbanks in lowlands; Honshu, Shikoku, 



ciduous tree with spreading, nearly glabrous branches; leaves Kyushu; very common. s. Asia, as far west as Iran. 



petiolate, 20-30 cm. long inclusive of the petiole, the petioles 2. Albizia glabrior (Koidz.) Ohwi. A. mollis var. 



with a cup-shaped gland on the upper side, the rachis and glabrior Koidz. Hiro-ha-nemu. Similar to tlie preced- 



rachilla puberulent on upper side, the leaflets herbaceous, ing, but die leaflets larger and fewer; branchlets loosely pubes- 



short-pubescent beneath and on margin, abruptly acute and cent while young; leaves 15-25 cm. long, bipinnate, the petiole 



mucronate, truncate at base, whitish beneath; panicles pubes- 4-6 cm. long, with a sessile ovoid gland on the upper side be- 



cent when young, die axis 2-4 cm. long, with more than 10 low the middle, the pinnae 4 or 5 pairs, 10-15 cm. long, 



spreading branches each 3-4 cm. long and the heads about short-petioled, the leaflets 15-20 pairs on each pinna, semi- 



20-flowered; flowers sessile, 7-9 mm. long, pinkish; stamens ovate, entire, 15-20 mm. long, 5-7 mm. wide, asymmetrical 



