Materials for a Flora of the Malayan Peninsula. 33 



Leaves pinnately 5-x -foliolate ; (1-foliolate in some 

 species of Tephrosia) : — 



Anthers apicnlate ; hairs centrally fixed ; (stamens 



diadelphous, 9 + 1) ... ... ... 23. Indigofera.* 



Anthers obtuse ; hairs basifixed ; — 

 Pods transversely septate between the seeds ; 

 (stamens diadelphous, 9 + 1) ... ... 24. Sesbania. 



Pods not septate ; (stamens 9+1, the upper often 

 united in the middle to the staminal sheath) : — 

 Leaflets closely parallel- veined ; pod thin early 

 dehiscent; leaves sometimes 1-^S'foliolate ... 25, Tephrosia. 

 Leaflets reticulate-veined ; pod thick, tardily 

 dehiscent ... ... ... ... 26. Millettia. 



Pods indehiscent or, rarely, opening (some Desmodia) along 

 the lower suture : — 



Pod not segmented ; (always indehiscent) : — 



Leaves odd-pinnate ; trees or strong woody climbers : — 

 Leaflets opposite : — 



Stamens monadelphous, the vexillary filament united 

 in the middle to the staminal sheath ; pod thickly 

 coriaceous or woody ; (calyx truncate) : — 

 Pod wingless ... 

 Pod winged ... 

 Stamens quite diadelphous, 9+1 : — 

 Pod winged ; calyx truncate 



Pod wingless ; calyx toothed ... 



Leafiets distinctly alternate : — 

 Flowers small, pods narrow 

 Flowers large, pods suborbicular 

 Leaves even-pinnate, the rachis ending in a bristle, herbs 

 with hypogxal fruits... ... ... 



Pod of several (rarely 1) indehiscent 1- seeded segments (in 

 Desmodium § Nicholsonia dehiscing along the lower suture) 

 (HEDYSAREja except Arachis) : — 

 Leaves exstipellate : — 



Stamens monadelphous, anthers dimorphous ; leaves 

 digitately 2-4-f oliolate ; (joints of pod muricated) ... 33. Zornia. 

 Stamens diadelphous in 2 bundles of 5 each ; anthers 

 uuiform ; leaves pinnate (Aeschynomenefe) ; (joints of 

 pod papillose or weakly muricated, rarely smooth) : — 

 Leaves even-pinnate, end-leaflet replaced by a 

 bristle; pod folded together within the calyx ... 34. Smithia. 

 Leaves odd-pinnate ; pod straight exserted : — 

 Calyx 5-toothed; ovary sessile, ovules few, joints 

 of pod oblong ... ... •.• 35. Ormocarpom. 



* None of the simple-leaved or subdigitately-leaved species of Indigofera ar© 

 reported from the Malay Peninsula. 



33 



