1897.] G. King — Materials for a Flora of the Malayan Peninsula. 97 



to be typical Pongmia glabra, Derry's ' Malapari ' is var. xerocarpa, and so apparently, 

 judging by Miquel's description, is Teysmann's. 



28. Derris Lour. 



Climbers, rarely erect trees. Leaves odd-pinnate, with usually ex- 

 stipellate leaflets. Flowers copious, usually fascicled, showy, in axillary 

 or terminal racemes or panicles. Calyx campanulate, nearly truncate. 

 Corolla much exserted, standard broad; keel obtuse, the petals cohering 

 slightly. Stamens usually monadelphous, the upper one free in § 

 Aganope ; anthers versatile. Ovary sessile, few-ovuled ; style incurved, 

 filiform, stigma capitate. Pod rigid, thin, flat, indehiscent, oblong if 

 one-seeded, strap-shaped if few-seeded, with a distinct wing down the 

 upper or both sutures. Distrib. Species about 40, belting the world in 

 the tropics. 



Standard not callose at the base : — 



Vexillary stamen free throughout ; flowers single in ample 

 thyrsoid panicles with nodes neither tumid nor produced 

 into stalks (§ Aganope) : — 



Pod winged only along the upper suture, and sinuate 



between the seeds; corolla over \ in. long .. ... 1. D. sinvata. 



Pod winged down both sutures, not sinuate between the 

 seeds; corolla under ^ in. long : — 



Buds and flowers distinctly pedicelled, bracteoles shorter 



than buds ... ... ... ... 2. D. Wallichii. 



Buds and flowers subsessile, bracteoles exceeding the 



buds ... ... ... ... ... 3. D. thyrsijiora. 



Vexillary stamen united with the others at least in the 

 centre of tube ; flowers fascicled on tumid nodes that are 

 sometimes produced into stalks : — 



Pods winged only along upper suture : — 



Pod narrow, pointed at both ends, several- seeded 

 (§ Brachypterum ): — 



Climbers, leaflets 9-19 medinm, acute ; flowers in 



long lax panicles exceeding thf leaves ... ... 4. D. scandens. 



Trees, leaflets 25-39 small, rounded ; flowers in dense 



panicles shorter than the leaves ... ... 5. D . dalbergioides. 



Pod suborbicular or shortly broadly-oblong, obtuse, 

 few-seeded (§ Euderris) : — 



Leaflets glabrous, not exceeding 5 in. long, exstipel- 



late ; pods glabrous ... ... .... 6. D. uliginosa. 



Leaflets pubescent beneath, often 6-8 in. long, stipel- 



late ; pods pubescent ... ... ... 7. D. elegans. 



Pod winged along both sutures [unknown in D. affirvis and 

 D. ftoribunda] ( § Dipteroderris) : — 

 Rachis and branches of panicle densely silky j pod silky ; 

 (leaves faintly-veined) ... ... ... 8. D.andamanica. 



J. ii. 13 



