1897.] Gr. King — Materials for a Flora of the Malayan Peninsula. 99 



2. Derris Wallichii Prain. A strong climber with glabrous 

 brownish lenticular branches. Leaves 8-12 in. long, leaflets pale-green, 

 5-9, subcoriaceous oblong-lanceolate acute, base rounded, 4-5 in. long 

 l'5-2 in. wide, glabrous on both surfaces, lateral nerves ascending 8-9 

 pairs prominent beneath, rachis 4-8 in. long glabrous as are the petio- 

 lules *25 in. long. Flowers in ample thyrsoid terminal and axillary 

 panicles 8-16 in. long, their branches '5-1 '5 in. long at intervals of 

 •25-5 in., their nodes not tumid nor produced into stalks, pedicels '2-25 

 in. long arranged in subopposite pairs at intervals of '2-'3 in., rachis 

 and its branches thinly-silky as are the pedicels and calyx, bracts at 

 base of pedicels ovate, much shorter than buds, lateral pair of bracteoles 

 at their apices very minute. Calyx tubular at length campanulate, mouth 

 truncate, *12 in. long, *15 in. wide. Corolla "3 in. long, standard erect 

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

 filament quite free. Ovary pubescent, ovules 4. Pod broadly strap- 

 shaped, thin, flat, glabrous, finely veined, l*5-4"5 in. long, 15 in. wide 

 1-2-seeded, not sinuate between the seeds ; distinctly winged down both 

 margins. Pterocarpus floribundus Wall. Cat. 5846. Derris thyrsiflora 

 Prain MSS. in Herb. Calcutta (as to Andamaus specimens) hardly of 

 Bentham. 



Andamans ; King's Collectors ! Distrtb. Silhet, Cachar and Khasia. 



The Andaman specimens here described have leaves very like those of D. 

 thyrsiflora but they have rather more nerves and are not quite so thick. The long 

 pedicels, however, make it very easy to distinguish the two, while the fruits of D. 

 Wallichii are broader than those of D. thyrsiflora. In distributing specimens from 

 the Calcutta Herbarium those from the Andamaus were unfortunately issued under 

 the name D. thyrsiflora. 



3. Derris thyrsiflora Benth. in Journ. Linn. Soc. IY, Suppl. 114. 

 A large rambling bush or small tree with spreading branches, 15 to 

 20 feet high, or a robust climber reaching 60-80 feet in length, in either 

 case with a stem 6-8 in. in diam. with glabrous lenticelled branches. 

 Leaves 8-15 in. long, leaflets dark-green, 5-9, coriaceous oblong to oblong- 

 lanceolate usually acute sometimes rounded at apex, base rounded or 

 cuneate, 4-6 in. long, l'5-2*5 in. wide, glabrous on both surfaces, lateral 

 nerves ascending 5-7 pairs rather prominent beneath, rachis 4-10 in. 

 long, glabrous as are the petiolules *25 in. long. Flowers in ample thyr- 

 soid terminal and axillary panicles 8-24 in. long, their branches '5-2 in. 

 long at intervals of '25— '5 in., their nodes not tumid nor produced into 

 stalks, pedicels in fruit under '1 in. in flower hardly perceptible, arrang- 

 ed usually in close-set subopposite pairs, rachis and its branches thinly 

 silky as is the subsessile calyx with linear deciduous basal bracteole as 

 long as bud and with two very minute lateral bracteoles, Calyx tubular, 

 at length campanulate, mouth truncate, '12 in. long, "15 in. wide, green- 



