Materials for a Flora of the Malayan Peninsula, 31 



Sub-order I. Papilionace^. 

 Herbs or shrubs (often climbing), rarely trees. Leaves simple or 

 digitately or pinnately compound ; usually stipellate rarely even-pinnate. 

 Inflorescence various, often racemose. Flowers irregular, usually her- 

 maphrodite, rarely regular. Sepals 5, united beyond the disc in a 

 campanulate or tubular calyx Tvith a truncate, 5-toothed or 5-lobed 

 limb, or with limb 4-toothed by union of the two upper segments or 

 2-lipped by similar union of three lower. Petals 5 imbricate or rarely 

 spreading, the upper {standard) outer, two lateral (wings) usually over- 

 lying and free from or attached about the middle to the two lower 

 inner rarely free usually connate below in a curved sheath (Jceel) ; petals 

 rarely subsimilar and subequal. Stamens inserted with the petals on a 

 disc lining the base of the calyx, usually 10 diadelphous in a sheath 

 of 9 connate next keel with 1 free next standaud, rarely in 2 lateral 

 sheaths of 5 each ; sometimes 9 by abortion of upper filament, or 5 by 

 abortion of alternate stamens; occasionally 10, monadelphous, very 

 rarely 10, free; anthers usually dehiscing longitudinally. Embryo with 

 radicle usually inflexed, accumbent. Albumen or very scanty. 



Stamens tnon- or di-adelphous : — 

 Pods dehiscent by both sutures : — 



Leaves even-pinnate the petiole ending in a bristle ; 



stamens 9, the tenth abortive ... ... ... 1. Abrus. 



Leaves odd-pinnate or simple, or digitately 3- or more- 

 foliolate : — 

 Leaves simple or digitately compound; (pods turgid) : — 

 Leaves simple, sessile, or digitately 3-7-foliolate ; sta- 

 mens monadelphous ; seeds many ... ... 2. Crotalaria. 



Leaves digitately 3-foliolate or, if 1-foliolate, petioled ; 

 stamens diadelphous ; seeds 2 ... ,,, 3. Flemingia. 



Leaves pinnately compound : — 



Leaves 3-foliolate (5-7-foliolate in one species of 

 Clitoria) (Phaseole^ except Flemingia) : — 

 Pods dehiscent from eud to end : — 



Leaves glandular beneath; (pod compressed j 

 stamens 9 + 1) (Cojaneae except Flemingia) : — 

 Ovules 2 ; the 2 upper calyx-lobes almost free ; 

 (stigma small terminal ; seed not strophiolate,) 

 funicle attached to end of hilum ... ... 4. Eriosema. 



Ovules 4 or more ; the 2 upper calyx-lobes 

 much connate ; funicle centric : — 



Climbers ; stigma small terminal ; seeds 

 strophiolate or sub-strophiolate : — 



Pod linear acuminate, hardly depressed 

 between the seeds ; funicle expanded but 

 seeds not distinctly strophiolate ... 5. Dunbaria. 



31 



