104 Materials fur a Flora of the Malayan Peninsula. 



Malacca; Maingay 608! Perak ; ScortecUni 1758! Kims tier 27*761 

 4014! 5583! 7398! Distrib. ; Tenasserim. 



Tl)e only differences between the two plants are in the points noted; their fruits 

 are identical. The species is evidently closely related to D. uliginosa and has very 

 simil-.ir pods ; tliese however are always ratlier narrower in proportion to their 

 length and farther differ in occasionally being 2-seeded. But the inflorescence 

 differs in the two in that the nodes of D. elegans are not produced ; and the leaves 

 differ markedly from those of D. uliginosa in shape, and as to pubescence. Tlie 

 most striking peculiarity of D. elegans is however the presence of stipels, a feature 

 most unusual in Derris, but equally manifest in both varieties. 



§ 4. DiPTERODERRis. Robust climbers with large leaflets, flowers 

 medium on tumid or produced nodes in terniiual and axillary panicles; 

 stamens monadelphous, base of vexillum without callosities ; pod winged 

 down both sutures. 



8. Dkkris andamanica Prain. A strong climber with fulvoas or 

 tawny-pubescent branches. Leaves 10-16 in. long; leaflets pale-green 

 7-9 (rarely 5) coriaceous, oblong or elliptic shortly cuspidate, base 

 rounded, 5-6 in. long 2-3 in. wide, glabrous on both surfaces, lateral 

 nerves 8-10 pairs spreading faint below not visible above except in 

 young leaves, secondary veining fine, rachis 6-12 in. long glabrous as 

 are the petiolules '25 in. Flowers in ample terminal and axillary 

 panicles, the branches rather numerous ascending 5-8 in. long, nodes 

 tumid or produced into short stalks sometimes '75-1 in. long, bearing 

 several unequal filiform pedicels either clustered at their tips or scatter- 

 ed throughout their extent, rachis and branches pale tawny-pubescent, 

 pedicels puberulous ■2-"3 in. long exceeding the calyx, bracteate at their 

 base and 2-biacteolate under the calyx. Calyx wide-campanulate '12 in. 

 long, densely silky, green, margin subentire. Corolla white '6 in. long, 

 standard orbicular, base ecallose shallow-cordate. Sta7nens monadel- 

 phous. Ovary finely pubescent ; ovules 4. Pod finely tawny-silky, thin, 

 strap-shaped, 3-4 in. long, 1 in. wide, winged subequally along both 

 sutures winos •12 in. wide ; seeds 1-3. Derris sinuata Prain in Journ^ 

 As. Soc. Beiig. LX, 2, 311 not of Beuth. 



Andamans ; from Coco Group southwards ; common on the coasts. 

 NlCOBARS ; common. 



This fine species has not, so far, been collected outside the limits of the 

 Andamans and Nicobars. Originally referred in the Calcutta Herbarium to Derris 

 sinuata, recent and fuller suites of specimens^ow show that its nearest alliance is 

 with the South Indian D. eualata Bedd., but it has longer pedicels and smaller 

 Lracteoles than has that species, and has a silky pod. 



9. Derris affinis Benth. PL Jungh. 252. A climber with pale - 

 brown lenticular glabrous branches. Leaves 6 in. long, pale-green, 

 leaflets 5 subequal, firmly chartaceous, ovate-acute base rounded, 2-5 in, 



104 



