166 MISS L. S. GIBBS ON THE FLORA AND PLANT FORMATIONS 
Distrib. Borneo (Sarawak). Malay Peninsula, Java, Sumatra, Billiton ; 
Indo-China. 
SMILAX LEUCOPHYLLA, Blume, Enum. Pl. Jav. 18. A et C. 
Tenom, Rayoh hills, 2000’, in high forest on the ridge. Jan. 2877. 
Distrib. Borneo (East Coast, Creagh : Kinabalu, 5000’, Haviland). Malay 
Peninsula, Java, Sumatra, Philippines, and Moluccas ; Indo-China. 
LILIACEÆ. (H. N. Riprky.) 
*RHUACOPHILA JAVANICA, Blume, Enum. Pl. Jav. i. 14. 
Dianella javanica, Kunth, Enum. Pl. v. 52. 
Kinabalu, above Lobang rock, 5500, in high forest. Fl. Feb. 4157. 
(Burbidge in Herb. Kew.) 
By some error this very distinct plant has been confused with Dianella 
nemorosa, Lam. for many years. The genus is readily distinguished from 
Dianella by the structure of the stamens, which in PRhuacophila have simple 
filaments swollen in the centre and narrowing gradually to both ends, 
while in Dianella the slender filiform filaments are dilated at the tip into 
a conspicuous yellow globose or subglobose thickening. 
I met with Rhuacophila javanica, Blume, on Gunong Tahan in the north 
of Tahang in the Malay Peninsula, at an altitude of about 5000’, and received 
it also from Gunong Kerbau in Perak from a native collector. In my 
account of the last expedition to the Tahan mountain I described it as 
Stypandra elata, as that was the genus most nearly allied to it as I then 
conceived. Here it attained a height of over 2 m., and its leaves with white 
backs and its white flowers make it very distinct. The distribution of the 
plant is as follows :— 
PHILIPPINE IsLANDS: Luzon, Benguet, Baguio, Elmer, 8590, 5191; 
Lepanto, Mt. Data, Micholitz, and without precise locality, at 5000-7000’, 
Whitehead ; Manila, Montalban, Loher : Albay, Cuming, 929 ; Mt. Mayon, 
Vidal, 1949. Negros Oriental, Dumaguete, Cuernos Mts., Elmer, 9726. 
Mindanao, Mt. Apo, Williams, 2556. TERNATE: summit of the island 
(Moseley). BonNEo : Kinabalu (Gibbs). Java: Mt. Gede (Blume, Boerlage, 
Zollinger), 1967, Pangerango (Kurz). MALAY PENINSULA : Gunong Tahan 
(Pahang), and Gunong Kerbau (Perak) (Ridley). Sumatra: Forbes (2384, 
1880). 
PONTEDERIACEZE. (H. N. RIDLEY.) 
MONOCHORIA HASTHFOLIA, Presl, Rel. Henk. i. 128. 
Tenggilan, 500’, open marsh and shallow ditches, common all through the 
country. Fl. Fr. March. 4343. 
Distrib. Tropical Asia. 
