32 Journal of the Asiatic Society of Bengal. [January, 1914 



p. 82. 



in Journ. Rov. Asiatic 



Soc, Straits Br., xxxviii. (1902), p. 66, in part. D.sativa, Wall., 

 Cat. Lith., (1832) No. 5108C. Through the Malay Peninsula to 

 Sumatra and Borneo. A species very well marked by the angle 

 at which the male spikes stand. 



76. D. Zollingeriana, Kunth, Enum, , v. (1850), p. 

 384: Miq., Flor. Ind. Bat., suppL, (1860), pp. 229, 611. 

 Nicobar Islands , the south of the Malay Peninsula, Sumatra, 

 Java and perhaps in the Kei Islands. It is nearly allied 

 to D. orbiculata. 



77. D. anguina, Roxb., Hort. Beng., (1814), p. 72, 



name only: and Flor. Ind., iii. (1832), p. 293. D. Combilium, 



Ham. in Herb. Wall, propr. D. pubera, Blume, Enum. Plant. 



Jav., i. (1827), p. 21, very inadequately described. Z). spinosa, 



Wall., Cat. Lith., (1832), Nos. 5103G, 5103H. India, in the 



Himalaya from Central Nepal eastwards; general where the 



moisture is sufficient on the south of the Ganges as far as 



Travancore (but not in Ceylon) ; Assam, northern Burma, Su- 

 matra and Java. 



78. D. Listeri, Prain et Burkill, in Journ. Asiatic 

 Soc. Bengal, vi. (1908), p. 452. Upper Assam and the ad- 

 joining hills. A species very close to D. anguina. 



79. D. eolyclades, Hook, f., Flor. Brit. Ind., vi. 

 (1892), p, 294; Ridley, Mat. Flor. Malay Penins., ii. (1907), 

 p. 81. D. nummularia, Moritzi, Syst. Verzeichn. d. v. Zol- 

 linger gesammelt. Pflanzen, (1846), p. 92: Zollinger, Syst. 

 Verzeichn., (1854), p. 68. D. pubera, Prain et Burkill, ex 

 Koorders-Schumacher, Syst. Verzeichn. Lief. 9, (1912), genus 

 No. 1252. Malay Peninsula, Sumatra and Java. 



80. D. trinervia, Roxb. MS. in Herb, propr., but not ex 



Wall. D. glabra, Wall., Cat. Lith., (1832) : Nos. 5105D, 5105E. 



D. oppositifolia Hook, f., Flor. Brit. Ind., vi. (1892), p. 292, in 

 part. 



D. tbinervia, Roxb. Tuber alte descendens, ad 1 m. longum, carne 

 molle supra aurantiaca infra alba. Gaulis tenuis, inermis, basi glaber, 

 apice pubescens, dextrorsim volubilis. Folia alterna, vel suprema 

 opposita, glabra, vel lanceolato-ovata basi obtusa, vel ovata basi 

 rotundtita, fulvomarginata, apice acuminata, ad 15 cm. longa, ad 5 

 cm. vel ad 8 cm. lata, 5-nervia: area media a nervorum lateralium 

 pare primo terminata late lanceolata: venae secundaria oblique 

 trajectae, paucae, inconspicuae : petiolus 2 cm. longus, pubescens. Flores 

 maris 20 — 35 in spicas binas ad axillas bractearum oppositarum 

 in inflorescentias ad 30 cm. longas dispositi : spicarum axes ad 20 cm . 

 longi, pubescentes, angulati: braeteae ovatae, acuminata, subglabrse, 1 

 mm. longas; bracteolse similes, minores. Sepala triangulari-ovata, 



