TOO Materials for a Flora of the Malayan Peninsula. 



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, 1-5-3-5 in. long, 1-1-25 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 ohovaturn a.nd Pong amia WhW. Cat. 0054). 

 Derris pyrrothyrsa Miq. Flor. Ind. Bat. Suppl. 297. Aganope fiorihunda 

 Miq. Floi. Ind. Bat. I, 151. Millettia thyrsifiora Bcnth. PL Jungh. 249. 

 NicOBARS ; Kamorta, Kurz ! Kedah ; Yau, Ridley 5224 ! Penang ; 

 Curtis 24SI Malacca; Griffith J776 ! Mair.gay 552! Iferry 94! 1030! 

 Perak ; Scortechini, 907 ! 1176 ! 1342 ! 1533! 1639 ! 2073 ! Wray, ]985 ! 

 25J3! 2770! 3068! Kunstler 36S01 64]9 ! 7638! 7757! 7919! 10062! 

 10395 ! 10850 ! Pahang ; Bidley 2456 ! 2458 ! Singapore ; Aiiderson 1 

 Kurz ! Rullett ! Distrib. Sumatra, Java. 



This species is very distinct from D. siniiata by reason of its Tmich smaller, more 

 nnmerous, 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 tlie 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 ohovatum is excluded because that plant is the same 

 as Pongamia ohovata 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 Spatholohus 

 acuminatus. 



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

 of Aganope fiorihunda 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 monadelphous ; base of vexillum without callosities ; pod thin 

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

 suture. 



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

 A very large climber often exceeding 100 feet in length with branchlets 

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

 very irregularly excentric annual rings. Leaves 4-6 in. 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, *7o in. wide, polished and glabrous above, obscurely adpressod 

 100 



