262 



Materials for a Flora of the Malayan Peninsula. 



Armed with spinesceufc stipule'^ ; seeds arillate ; (pinnae 

 of leaves 1-jugate, their rachises gland-bearing ; leaflets 

 1-jngate; pods close-spiral, dehiscent along lower suture, 

 testa of distant seeds thill) ... ... ... 1. P. dtdce. 



Unarmed ; seeds without iirillus : — 



Pod indehiscent, (horse-shoe shaped), seeds (distant) with 

 a thick leathery testa ; (pinnae 1-jngate, their rachisea 

 gland-bearing; leaflets ghibrons 2-jugate) ... ... 2. P. confertum. 



Pods dehiscent, seeds with a thin crnstaceous testa : — 

 Pods straight or slightly falcate, opening along both 

 sutures, valves thick, fleshy, seeds close-set, mutually 

 compressed; (pinnas 1-jugate, their rachises gland- 

 bearing, leaflets glabrous 1-2-jugate) ... 3. P. huhnlinum. 

 Pods spirally twisted, opening only along the lower 

 suture, valves coriaceous, seeds distant : — 



Pods deeply lobed between the seeds half-way down 

 to upper suture or further, dehiscing only opposite 

 the seeds; (pinnas 1-jugate, their rachises gland- 

 bearing, leaflets glabrous 2-3-jugate) ... ... 4. P. lohatiun. 



Pods only faintly sinuate on lower suture between the 

 seeds, dehiscence along lower suture continuous : — 

 Pinnae 1-jugate without glands on their rachises ; 

 (leaflets glabrous) : — 



Pods large, VS in. broad ; seeds somewhtit com- 

 pressed, '6 in long; leaflets 2-jugate apex acute 

 Pods small, '4 in. broad ; seeds pisiform, 2 in. 

 across ; leaflets 3-4-jugate, apex caudate-acumi- 

 nate 



Pinnae more than 1-jugate or, if casually 1-jugate 

 then with glands on their rachises ; (pods large) : — 

 Pods broad, 125 in. wide or more; leaflets very 

 large, glabrous ; (pinnae 2-jngate, distal much 

 exceeding the proximal casually absent pair) : — 

 Rachises of pinnae with glands between each 

 pair of lenflets ; flowers in dense many-fld. 

 heads '75 in. across; leaflets shining on both 

 surfaces ; branches of panicle terete ... 7. P. affine. 



Rachises of pinnae with glands between bases of 

 terminal leaflets only ; flowers in few-fld. heads 

 •2 in. across ; leaflets dull beneath, branches of 

 panicle subcompressed ... ... 8. P. ellipticum. 



Pods narrow, "75 in. wide or less; leaflets medium 

 or small, puberulous or pubescent beneath : — 

 Flowers large ('5 in. long) ; pod long-stipitate, 

 seeds with long axis parallel to sutures ; 

 (pinnae 2-jugate or casually 1-jugate, leaflets 

 medium ; branches terete) ... ... 9. P. Kunstleri. 



Floweis small (under '25 in. long) ; pod short- 

 stipitate, seeds with long axis transverse : — 

 262 



P. nicohavicxim. 



6. P. microcarpum. 



