100 G. King — Materials for a Flora of the Malayan Peninsula. [No. 1, 



ish white. Corolla white, *3 in. long, standard erect orbicular *35 in. 

 wide, with ecallose cordate base. Stamens 2-adelphous, the vexillary 

 filament free from the rest to the base, the free portion of all the filaments 

 slightly puberulous. Ovary pubescent ; ovules 4. Pod strap-shaped, 

 thin, flat, glabrous finely-veined, 15-35 in. long, 1-125 in. wide, dis- 

 tinctly winged along both sutures, wings subequal '2-25 in. wide, not 

 sinuate between the 1-3 (very rarely 4) seeds. Bak. in Flor. Brit. Ind. 

 II, 246 (excl. syn. Amerimnum obovatum and Pongamia Wall. Cat. 9054). 

 Derris pyrrothy rsa Miq. Flor. Ind. Bat. Suppl. 297. Aganope floribunda 

 Miq. Flor. Ind. Bat. I, 151. Millettia thyrsiflora Benth. PI. Jungh. 249. 



Nicobars ; Kamorta, Kurz I Kedah ; Yau, Ridley 5224 ! Penang ; 

 Curtis 248 I Malacca; Griffith J776 ! Main gay 552! Berry 94! 1030! 

 Perak ; Scortechini, 907 ! 1176 ! 1342 ! 1533 ! 1639 ! 2073 ! Wray, 1985 ! 

 25J3! 2770! 3068! Kunstler 3630 ! 6419! 7638! 7757! 7919! 10062! 

 10395 ! 10850 ! Pahang ; Ridley 2456 ! 2458 ! Singapore ; Anderson ! 

 Kurz ! Hullett ! Distrib. Sumatra, Java. 



This species is very distinct from D. sinuata by reasou of its much smaller, more 

 numerous, and more closely set florets, which are as nearly as possible sessile ; also 

 on account of its very different pods which are shorter, much thinner, not sinuate 

 between the seeds and are distinctly winged down both sutures. It is much more 

 closely related to the last species from which it can be most easily distinguished 

 by the absence of pedicels. 



The synonym Amerimum obovatum is excluded because that plant is the same 

 as Pongamia obovata Grab., reduced, with justice, to Derris cuneifolia. And the 

 synonym Pongamia Wall. Cat. 9054 is also excluded, at least as a temporary 

 measure, because Mr. Baker, in another passage, has referred it to Spatholobus 

 acuminatus. 



There are at Calcutta authentic examples, named by Dr. Miquel himself, both 

 of Aganope floribunda Miq. and of Derris pyrrothyrsa Miq.; these are specimens of 

 the same species, from Java and Sumatra respectively ; they agree exactly with our 

 specimens from the Malay Peninsula. 



The variation in habit depends on whether the species is growing in open places 

 or in dense forest. 



§ 2. Brachypterum. Trees or climbers with comparatively small 

 leaflets ; flowers medium fasciculate on tumid nodes in axillary panicles : 

 stamens rnonadelphous ; base of vexillum without callosities ; pod thin 

 strap -shaped, narrow, pointed at both ends, winged only along the upper 

 suture. 



4. Derris scandens Bentli. in. Journ. Linn. Soc. IV, Suppl. 103. 

 A very large climber often exceeding 100 feet iu length with branclilets 

 at first obscurely gi'ey downy ; stems as thick as a man's wrist with 

 very irregularly excentric annual rings. Leaves 4-6 iu. long, dark 

 green ; leaflets 9-19, rigidly subcoriaceous obovate-oblong to oblong, 

 acute rarely obtuse at apex, cuneate less often rounded at base, 2 in 

 long, '75 in. wide, polished and glabrous above, obscurely adpressed 



