260 -XLV. LEGUMINOSJ] \BcmMnia 



less Mfidj the lobes narrow and tapering. PL small, white, in long slender 

 racemes, arranged in terminal panicles. Calyx-tube campanulate, very short, 

 lobes 5, ovate, spreading. Petals |- in. long. Stamens 3. Ovary glabrous. 

 Pod thin, obliquely elliptic, 2 by 1 in., l~-2-seeded. 



Sikkim Terai, ascending to 2,000 ft., Khasi hillb, Cliittagong, Martaban. The 

 Burma plant (var. Horrfieldii) has smaller pods, FL B. S. B. macrostachya, Kurz 

 F. ri. 401, may possibly be tliis species. See Pi^ain in Journ. As. Soc. Beng., 66 (1898) 

 500. 



29. B. Cliampioiiii, Benth. Tista valley, Sikkim, common. Assam. China. Similar to 

 27, but 1. minutely pubescent beneath. Ovary pubescent. 30. B. macrostaclxya, 

 Wall. Assam, Silbet. Brancblets and 1. glabrous. Fl. in forked or simple narrow- 

 racemes, 4-6 in. long, pedicels ^-1 in., in the axils of small triangular bracts. Calyx- 

 tube as long as the 5-clef t limb. Petals densely silky, ■J in. long. Pod tomentose, 4-6 by 

 2 in. Seeds 2-4. 



Third Sub-Order, MIMOSEJS. 



Trees, shrubs, climbers, rarely herbs, v;rith abruptly bipinnate, rarely pinnate 

 leaves and small flowers in heads, spikes, racemes, or small umbels. PL 

 regular, occasionally polygamous. Sepals valvate, generally connate, rarely 

 free, Usually 5. Petals valvate, as many as sepals, hypogynous, usually con- 

 nate. Stamens hypogynous, definite or indefinite. Seeds without albumen, 

 embryo straight, radicle short. 



Most trees of this Sub-order have a distinct dark-coloured heart-wood. Of the climb- 

 ing species, JEhitada scandens has an anomalous structure, while the climbing Acacias have 

 a hard normally built wood. 



A. Stamens 10, anthers with deciduous apical glands. 



Thorny trees or shrubs ; £. in cylindrical spikes. 



Pinnse 2 pair ; leaflets small, 7-10 pair . . .1. Prosopis. 



Pinnse 2 pair ; leaflets 2-4 in. long, 1 pair . . 2. Piptadenia. 



Pinnse 6-10 pair ; leaflets small, 12--15 pair . . 3. Dichrostachys. 



Unarmed climbers ; fl. in cylindrical spikes . . 4. Entada, 

 Unarmed trees. 



Leaflets evenly alternate, 1 in. long ; fl. racemose . 5. Auenantheka. 



Leaflets opposite, 3-9 in. long; fl. in globose heads 6. Xylia. 



B. Stamens 8 or 10, anthers without glands. 



Stamens 10, monadelphous 7. P^rkia. 



Stamens 8 or 10, free. 



Pod continuous Leucjena (p. 262), 



Pod jointed 8. Mimosa. 



Stamens indefinite, free. Thorny trees or climbers 9. Acacia. 

 Stamens indefinite, monadelphous. 



Pod thin, straight, sutures not thickened . . 10. Albizzia. 



Pod falcate, sutures much thickened . . .11. Calliandra. 



Pod circinate or twisted 12. Pithecolobium. 



1. PROSOPIS, Linn. ; PI. Brit. Ind. ii. 287. 



(Species 25, tv^o in Western Asia and India, two in tropical Africa, the rest 

 in the drier regions of America, from Colorado and Utah to Patagonia.) 



1. P. spicigera, Linn. ; Eoxb. Cor. PL t. 63 ; Bedd.Pl. Sylv. t. 56 ; Brandis 

 P. PL t. 25. Vem. Jand, Punjab j Kandi^ Sind ; Khejra^ Eajputana ; Semru, 

 Sumri, Guzerat ; Saunder^ Mar. ; Bannij Kan. ; Jamhij TeL ; Jamhu^ Tarn. 



A middle-sized glabrous thorny tree with a very long tap-root. Bark grey, 

 rough, with deep fissures and cracks. Sap-wood large, irregular masses of 

 '•dark-brown heart-wood in the centre of old trees. Branches and branehlets 

 a.rmed with scattered broad-based conical prickles. L. bipinnate, pinnse and 

 leaflets opposite, pinnse 2, leaflets 7-10 pair. Spikes slender, in short axillary 



