106 Materials for a Flora of the Malayan Peninsula, 



leaflets bright-green, 7 (sometimes 9, rarely 5), rigidly subcoriaceous to 

 coriaceous, ovate-obloDg cuspidate, base rounded to cuneate, 2-4 in. long, 

 1-2 in. wide, glabrous on both surfaces, lateral nerves numerous 

 parallel spreading indistinct beneath visible above, rachis 4-6 in., 

 glabrous as are the petiolules '25 in. long. Flowers in rather dense, 

 fastigiately branched, axillary panicles 6-9 in. long, lower branches 

 almost equalling main-rachis, nodes rather close often produced in short 

 stalks bearing usually 3 unequal filiform pedicels, rachis and pedicels 

 glabrous, the pedicels *25 in. long, 2-bracteolate a short distance below 

 calyx. Calyx campanulate '12 in., glabrescent, mouth sinuately-toothed. 

 Corolla pink {'Ridley) or purple (Kunstler)^ -3 in. long, standard orbicular 

 ecallose. Stamens monadelphous. Ovary sparsely pubemlous ; ovules 

 usually 2. Pod thin glabrous ligulate-ohlong flexible finely veined, 3-4 

 in. long, 1-1*5 in. wide, upper wing '25 in. wide, lower narrow; seeds 

 usually 2, sometimes solitary. 



Vae. tijpica ; leaves rigidly subcoriaceous green beneath. D. amoena 

 Benth. Journ. Linn. Soc. lY, Suppl. 110; Bak. in Flor. Brit. Ind. II. 

 245. Fongamia amoena Wall. Cat. 5912. 



Peiuk; Kunstler 1381! Scortechini 1736! Malacca; Maingay ! 

 DiSTRiB. Tenasserim. 



Yar. Maingayana ; leaves coriaceous glaucous beneath. Derris 

 Maingayana Bak. in Flor. Brit. Ind. II, 245. 



Malacca ; JDerry ! Singapoee ; Maingay ! Hullett ! Ridley 6402 I 



It seems impossible, now that large suites of specimens have been sent from 

 Malacca by Mr. Derry, to treat these two plants as more than varieties of one 

 species. Mr. Derry gives two local names for his plant, ' Aker-tuha-tuha ' and 

 ' Aher-pakidah.* 



§ 5. Paraderris. Robust climbers with large leaflets, flowers large 

 on usually produced nodes in axillary panicles ; stamens monadelphous ; 

 base of vexillum with two callosities extending aloug the claw ; pod 

 winged down the upper suture. 



12. Derris elliptica Benth. Journ. Linn. Soc. lY, Suppl. 111. A 

 large climbing shrub 20-30 feet long with black warted branches and 

 rusty- pubescent young shoots. Leaves 9-15 in. long, dull greyish-green, 

 leaflets 9-13 subequal, at first membranous, with age subcoriaceous, 

 oblong to oblanceolate-oblong cuspidate, 3-6 in. long, 1-1 '3 in. wide, 

 pubescent beneath, at first puberulous at length glabrous above, rachis 

 6-9 in. long, rusty-pubescent faintly grooved above, petiolules '2 in. long 

 rusty -pubescent, lateral veins 8-10 pairs prominent beneath as is the 

 midrib. Flowers in copious lax axillary racemes 9-10 in. long, never 

 exceeding the leaves, nodes produced into distinct stalks '3-l'3 in. long, 

 each bearing one or more (usually 3) subequal pedicels, rachis and 

 106 



