APOSTASIACEZ OF THE MALAY PENINSULA. 225 
instead of yellow, and a native of China and Japan, whereas 
L. paradoxa was only known from the Indian region, though I 
could see no structural difference between the two. 
In March, 1889, however, while collecting in a marshy spot 
at Ang Mo Kio, in Singapore, I found three plants of a species 
of Liparis, one of which was in flower, and was evidently 
L. paradowa, Reichb. f. It had greenish yellow flowers much 
the colour of those of DL. Loeselii, A. Rich. The other two 
plants were in bud. The locality was a hot exposed wet grassy 
field, full of such grasses as Leersia herandra, Sw., and Isachne 
australis, R. Br.; and Thrixspermum lilacinum, Reichb. f., was 
scrambling through the grasses. The water was about 2 feet 
deep, with the Liparis growing in it. I removed the two 
unopened plants to the Botanic Gardens, had them potted and 
put into a shady place; both flowered in a few days, and were 
exactly similar in colouring. The sepals were exposed to the 
light when in bud, and the centres of the lip were of a deep 
purple black; while that part of the sepals which was covered 
by the lip and the edges of the hp (which were turned down- 
wards, and so not exposed to full light) were green. In fact 
the flowers exactly resembled figures of DL. nervosa of China. 
This change of colour was the more striking as one of the 
plants had its buds very well developed when moved to the 
garden, and did not show any signs of darkening till it had 
been put in the shade. 
From this I think it is clear that the two species are really 
the same, and that the colouring of the S. nervosa form is due 
to something analogous to melanism in animals. 
I have already referred to a similar variation in colour in 
Microstylis congesta, Reichb. f. The Thrixspermum lilacinum, 
Reichb. f., too, which I got out of the same marsh as the 
Liparis, had its flowers nearly white, but grown in shade they 
put on the fine lilac colouring from which the plant takes its 
name. Indeed this plant varies very much in depth of colour 
in cultivation according to the brilliancy of the sun before 
opening. 
Livarts Wrayu, Hook. f., Fl. Brit. Ind., vi. p. 181. 
Hab. Perak: Wray. 
L.  ranstipnata, Ridl., sp. nova. Pseudo-bulbus vetustus 
1} poll. longus, § poll. crassus, cylindricus. Cavlis junior a 
LINN. JOURN.-—-BOTANY, VOL. XXXII. Q 
