■] LEGDMINOS^. 73 



Anthers versatile, opening lengthwise. Flowers racemose 



Tree Pods thick, not winged 26. Pokgamia. 



Woody climbers. Pods thin, with a narrow wing , . 25. Dehris. 

 Stamens all ii-ee [Sophorece). 



Calyx loose, truncate. Leaves simple .... . . . 27. Boweingia 



Calyx 5-toothed. Leaves pinnate. 



Fruit indehiscent, much contracted between the seeds . . 28 Sophoka 



Pod 2-valved ] 29] Okmosia.' 



SuBOUDEK II. Csesalpiniese.— Coro/& irregular or nearly regular, imbricate in the 

 bud, the upper petal inside. 



Leaves twice pinnate. 



Pod very prickly 30. Guilandina. 



Pod not pnckly 31. C-esaipinia. 



Leaves once pinnate. 



Petals conspicuous, yellow, spreading . . . . .32. Cassia. 



Petals very small, almost like the sepals . . 34. Glebitschia. 



Leaves 2-lobed or with 3 leaflets . 33. Bauhinia. 



SUBOKDEU in. Mimosese. — Corolla regular. Petals small, valvate in the bud, 

 leaves ttcice pinnate. 



Stamens 10 35. Leuc^na. 



Stamens indefinite. 



i free, usually short 36. Acacia. 



Stamens monadelphous, usually long. 



Pod straight, thin 37. Albizzia. 



Pod curved or spiral, often thick and pulpy inside . . 38. Pithecolobium. 



SUBORDER I. PAFIIiIONACE.a:. 



Calyx 5-toothed or -cleft, or 4-tootlie<i by the union of the 3 upper ones, 

 rarely splitting irregularly. Corolla very irregular, papilionaceous, that is, of 

 5 petals, the upper one, or standard {vexillum), outside in the bud ; the 3 

 lateral ones, called wings (aliB), intermediate ; the 2 lowest more or less imited 

 along one edge into a single boat-shaped one called the keel (carina). Stamens 

 Usually 10, either all united or diadelphous, when one is usually free, and the 

 9 others united, or all free. 



Tribe I. GENISTE^. 



Leaves simple, or of 3 (rarely 5) digitate leaflets, all inserted at the end 

 of the petiole. Racemes terminal or leaf-opposed. Stamens all united in a 

 tube. 



1. CROTALAE.IA, Linn, 



Calyx B-cleft. Standard broad. Wings free, transversely wrinlded above 

 the claw. Keel with a straight or curved point or beak. Stamens all united 

 in a sheath, open on the upper side. Anthers alternately ovoid and oblong. 

 Style suddenly bent in above the ovary. Pod inflated. — Herbs or shrubs. 

 Leaves simple and sessile, or with 3 or 5 digitate leaflets at the end of the 

 petiole. Stipules scarcely conspicuous in the Hongkong species. Racemes 

 terminal or leaf-opposed. Pedicels solitary to each bract, with 2 bracteoles 

 close under or even upon the calyx. Plowers yellow, or rarely bluish or 

 purplish. 



