11 



Distr. India, Assam, Burma, Yunnan, Polynesia, Mascerene Is., 

 West Tropical Africa. 



Dioscorea birmanica, Prain ct Burkill. 



Chiengmai, in scrub jungle at foot of Doi Sootep, 330 in., Rcrr, 

 1326. 



Distr. Burma. 



Dioscorea brevipetiolata, Prain et Burkill. 



Sriracha, Nawng Kaw, edge of railway track, 30 m., Kerr, 2047. 



Dioscorea bulbifera, Linn. 



Chiengmai, in scrub jungle, 300 m., Rerr, 1529b ; near Muang 

 Hawt, 225 m., Rerr, 2206 ; Phre, 156-240 m., Luang Vanpmk, 

 127. 



Distr. Through India except the driest parts, Ceylon and 

 eastwards to Tahiti reaching Japan northwards and entering 

 Australia southwards. Probably only an introduction in other 

 parts of the world (e.g., Africa and W. Indies). 



Lao name, Koii (ex Rerr). 



Dioscorea daemona, Roxb., var. mollissima, Prain et Burkill. 



Chiengmai, in mixed jungle at foot of Doi Sootep, 300 rn., Ken', 

 681. 



Distr. Through India except tl^e dry parts of the North West, 

 Ceylon and eastwards through southern China, Malaya to New 

 Guinea ; var. mollissima in the Malay region only. 



Dioscorea decipiens, Hook.f. 



Chiengmai, Doi Sootep, in mixed jungle, 360 m., Rerr, 1449. 

 Distr. Burma, just entering Southern China and reaching 

 Cochinchina. 



Dioscorea glabra, Roxb. 



Chiengmai, Doi Sootep, in scrub jungle, 330 m., Kerr, 1485. 



Distr. From Orissa and Bengal eastwards to the Malay Islands. 



Dioscorea kamoonensis, Kth. 



Chiengmai, Doi Sootep, in open jungle, 1560 m., Rerr, 1374. 

 Distr. Along the Himalaya to South-Western China and thence 

 southwards in a few ranges. 



Dioscorea Kerrii, Prain et Burkill. 

 Chiengmai, Rerr, 1404. 



Dioscorea membranacea, Pierre. 



Chiengmai, Doi Sootep, in mixed jungle, 360 m., Kerr, 1245 ; 

 Meh Hia, 330 m., in mixed jungle, Kerr, 1951. 

 Distr. Chin Hills, Cochinchina. 



Dioscorea pentaphylla, Linn. 



Chiengmai, Doi Sootep, 900 m., Rerr, 1383, 1383a. 

 Distr. India, except the Punjab, Ceylon and eastwards to Tahiti 

 entering Southern China. 



Dioscorea pentaphylla, Linn., var. near var. Jacquerttontii. 

 Chiengmai, Doi Sootep, in mixed jungle, 360 m., Kerr, 1450. 

 This variety is confined to Western India. Kerr, 1450 cannot be 

 proved to be the same with the root and abundance of $ flowers. 



