Materials for a Flora of the Malayan Peninsula.] 27 



Tribe VI. HEDYSAREiE. Herbs, nndershrubs or shrubs sometimes 

 twining or climbing, rarely trees. Leaves odd- or rarely even-pinnate, 

 petiole if produced not cirrhate, leaflets 3-x , rarely digitately 3-4- 

 foliolate, 1-foliolate or simple. Stamens diadelphous, 9 connate in a 

 sheath as high as their middle or higher and split along the upper side, 

 the upper being free, or monadelphous in a sheath split along the upper 

 side, or diadelphous in two equal lateral half-sheaths (split simultaneously 

 along upper and lower sides) or rarely all free ; filaments free at their 

 tips, filiform or dilated upwards ; anthers uniform versatile, or rarely 

 2-morphous, the alternate larger subbasifixed. Pod indehiscent separa- 

 ting into 1-seeded segments, rarely unsegm anted (AracMs), or by abor- 

 tion or organically (Phylacium) 1-seeded. Seeds rarely strophiolate. 

 Stamen8 inonadelphous, anthers 2-morphon8; leaflets even- 

 pinnate or digitate, exstipellate ... ... ... A. Stylosantheas. 



Stamens diadelphous, anthers uniform ; leaflets odd-pinnate 

 or simple. 



Leaflets exstipellate, staminal phalanges 5 + 5 ... ... B. Aeschynomeneae. 



Leaflets stipellate, staminal phalanges 9 -1- 1 ... ... C. Desmodieas. 



Sub-trihe A. Stylosantheas. Herbaceous approaching undershrubs, 

 often viscid ; leaves exstipellate, leaflets few ; flowers spicate, capitate 

 or rarely subracemose, in terminal spikes, or axillary by suppression of 

 floral branches ; bracts 1-foliolate and 2-stipulate, or stipuloid from 

 suppression of the leaf-element ; stamens monadelphous ; anthers 5 

 oblong basifixed, 5 alternate shorter versatile. 



32. Arachis. Calyx-tube long filiform; leaves even-pinnate; pod 



not segmented ripening underground. 



33. Zornia. Calyx-tuhe not elongated ; leaves digitately 2-Ai-f olio- 



late. 

 Suh-trihe B. Aeschynomeneas. Herbs, undershrubs or shrubs ; leaves 

 pinnate, leaflets oo , or rarely 1-3, exstipellate ; flowers usually in few- 

 fld. axillary racemes, rarely in axillary fascicles or subcymose ; keel 

 obtuse or beaked, incurved ; wings usually transversely folded ; sta- 

 mens {in Malayan genera) connate in two lateral phalanges; style 

 filiform. 



34. Smithia. Pod folded within calyx. 



35. Ormocarpum. Pod straight exserted, joints ohlong ; ovary 



sessile* 



36. Aeschynomene. Pod straight exserted, joints quadrate or sub- 



orbicular ; ovary stipitate. 

 Sub-tribe G. Desmodiese. Herbs, rarely twining, or undershrubs, less 

 often shrubs, very rarely trees ; leaves pinnately 3-foliolate or 1-folio- 

 late the distal leaflets 2-stipellate the lateral leaflets opposite, each 1- 

 stipellate, rarely 5-7-foliolate ; stipules often striate ; flowers in pairs 



27 



