554 DIOSCOREACEM. [ LASIOPHYTON. 



3. D. trlphylla, Linn. Amcen. Acad. iv (1754), 131 ; Lamlc- 

 Encyd. Method. Hi (1789), 234 ; Prain and BmUll I. c. p. 25 D. 

 doemona, Eoxb. ; Fl. Ind. Hi, (1832) 805 ; F. B. I. vi, 289 ; Watt, 

 E. D. ; Prain Beng. PL 1066 ; Cooke FL Bomb, ii, 756. 



From India to New Guinea, occurring just within S. W. China and' 

 in Formosa. Linnaeus in 1853 applied the name " triphylla " to a 

 form of D. pentaphylla ; in 1754 he applied it as Prain and Burkill 

 use it here. 



VAR. doemona, P. and B. I. c. page 26. 



A pubescent plant, common in India. Within the area of this flora 

 it has been recorded by Burkill from Saharanpur Government 

 Garden, Siwalik range in the Mohand Pass, N. Oudh, Gorakhpur, 

 Mirzapur, Gwalior and Bundelkhand. DISTRIB. : Central India and 

 C. Provinces, extending to the less rainy portions of Java.- 

 Roxburgh says of D. dosmona that the roots are dreadfully nauseous, 

 even after being boiled. 



Section OPSOPHYTON. 



4. D. tmlbifera, Linn. Sp. PL (1753), 1033 ; Prain Beng. 

 PL 1066 ; Cooke FL Bomb, ii, 758 ; Prain and Burkill I. c. p. 26. 

 D. crispata, Eoxb. ; FL Ind. Hi, 802. D. hetcrophylla, Roxb. ; 

 FL Ind. Hi, 804. D. oppositifolia, Campbell Econ. Prod. Chutia 

 Nagpur (1886) p. 7. D. pulchella, Eoxb. ; FL Ind. Hi, 801. D. 

 gativa, Thunb. FL Jap. 191 ; F. B. I. vi, 295 ; Duihie in F. and 

 G. Crops pt. Hi, 11. Plate Ixxx. 



From India to the remotest parts of the Pacific, ascending the Himalaya 

 to 5,000 ft., and in S. China, in S. Japan, and in N. Australia. In- 

 troduced into Trop. America and Africa. 



VAR. vera. P. and B. 1. c. page 26 ; D. pulchella, Rox b. 9 L c. 

 901: 



Tuber and bulbils short, acid ; leaves shining on upper surface.^very 

 common in Upper Gang. Plain. Vern, Rdt-dlu. 



VAR. sativa, P. and B. L c. Vern. Rdt-dlu (Hind). 



Tuber very small ; bulbils large, nearly smooth, greenish-brown ; leaves 

 large, broadly ovate. Cult, in India and on the shores of Pacific. 

 (Otaheite Potato). 

 Var suavlor, P. and B. 1. c. p. 26. 



Tuber and bulbils scarcely acrid. Cult, in India, and recorded from.' 

 Jhansi. 



V 



