2897.] G. King — Materials for a Flora of the Malayan Peninsula. 33 



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

 species of Tephrosia) : — 



Anthers apicalate ; hairs centrally fixed ; (stamens 



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



Anthers obtnse ; 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 l-3-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 ... ... ... ... 27. Pongamia. 



Pod winged ... ... ... ... 28. Derris. 



Stamens quite diadelphous, 9 + 1 ; — 

 Pod winged ; calyx truncate ... ... 28. Derris 



§ Aganope. 

 Pod wingless ; calyx toothed ... ... 29. Kunstleria. 



Leaflets distinctly alternate : — 



Flowers small, pods narrow ... ... 30. Dalbergia. 



Flowers large, pods suborbicular ... ... 31. Pterocarpus. 



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



with hypogaeal fruits... ... ... ... 32. Arachis. 



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

 Desmodium § Nicholsonia dehiscing along the lower suture) 

 (Hedysare-S except Arachis) : — 

 Leaves exstipellate : — 



Stamens monadelphous, anthers dimorphous ; leaves 

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

 Stamens diadelphous in 2 bundles of 5 each ; anthers 

 uniform ; leaves pinnate (Aeschynomeneze) ; (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. Ormocarpum. 



* None of the simple-leaved or subdigitately-leaved species of Indigofera are 

 reported from the Malay Peninsula. 



J. ii. 5 



