DIOSCOREACEAE 103 
Dioscorea tugui Blanco Fl. Filip. (1837) 800 (sp. nov.) =Dioscorea sativa 
Blanco op. cit. ed. 2 (1845) 551; ed. 3, 3 (1879) 209, non Linn.= 
DIOSCOREA ESCULENTA (Lour.) Burkill [D. acu/eata Linn. var. 
tiliaefolia (Kunth) Prain & Burkill, D. tiliaefolia Kunth]. 
This species is very common in the Philippines and is of wide 
distribution at low altitudes. It was reduced by Naves to Dios- 
corea fasciculata Roxb., but Roxburgh’s species is considered 
by Prain & Burkill as merely a variety of D. aculeata; i. e., D. 
esculenta (Lour.) Burkill. Dioscorea tugui Blanco is the wild 
form and is characterized by the production of a crown of very 
spiny modified roots above the tubers; a cultivated form that is 
found in the Philippines cannot be distinguished from this wild 
form in any character except that the spiny modified roots are 
lacking. : 
Illustrative specimen from Manila, Luzon, November, 191+ 
(Merrill: Species Blancoanae No. 202). 
Dioscorea triphyila Blanco Fl. Filip. (1837) 799; ed. 2 (1845) 551; ed. 
3, 3 (1879) 208, non Linn. =DIOSCOREA HISPIDA Dennst. (D. dae- 
mona Roxb.). 
This is Dioscorea triphylla Linn. in Stickman Herb. Amb. 
(1754) 23 as typified by Ubiwm sylvestre Rumph. Herb. Amb. 
5: t. 128. It is not Dioscorea triphylla Linn. Sp. Pl. (1753) 
1082; for the synonymy see Prain & Burkill in Journ. As. Soc. 
Beng. N. S. 10 (1914) 25. It is common and widely distributed 
in the Philippines at low and medium altitudes. The tubers are 
large, and after the poisonous principle is dissipated by long 
washing in running water they are much used as food. Tagalog, 
nime ; Ilocano and Visayan, corot. 
TMhist#ative specimen from Umingan, Pangasinan Province, 
Luzon, May, 1914 (Merrill: Species Blancoanae No. 90). 
DIOSCOREA PENTAPHYLLA Linn.; Blanco Fl. Filip. (1837) 802; ed. 2 
(1845) 552; ed. 3, 3 (1879) 210. 
The plant Blanco described is manifestly a form of the Linnean 
species and is referable to the var. malaica Prain & Burkill in 
Journ. As. Soc. Beng. N. S. 10 (1914) 23. It is common about 
Manila and seems to be widely distributed in the Philippines, 
growing in thickets at low altitudes, but is not cultivated. It 
rarely produces flowers in the Philippines, but very generally 
produces bulbils. The Tagalog name is lima-lima, “lima” mean- 
ing five, from the number of leaflets. 
Illustrative specimen from Antipolo, Rizal PHiy Nee? Luzon, 
October, 1914 (Merrill: Species Blancoanae No. 458). 
