APOSTASIACEH OF THE MALAY PENINSULA. 227 
the affinities of all three being with Liparis, for the following 
reasons; the column (in LZ. Maingayi especially) is much 
longer than is usual in Microstylis, and as this appears to me 
to be the chief distinguishing. mark between the two genera, 
it must be allowed to have great weight. With respect to the 
form of the column, it is (in specimens from Penang Hill 
examined alive) broadly dilated at the base, narrowed upwards, 
and arched over the lip. The stelidia are distinct, though not 
very large. In LZ. parvula the column is much shorter, but 
still stands up well over the base of the lip, and the stelidia 
are much larger. Turning to the lip, we find that there is 
no claw, as in many (but not all) Inparides. There is a 
distinct fovea at the base in both species, and in the fovea 
are distinct but small calli. The presence of the fovea, a 
rounded depression at the base of the lip, is usual in Microstylis, 
but it does occur, also, in some of the Liparides, e.g., L. venosa, 
Ridl., where there is also a callus behind it. Finally, the lip 
is not auricled, ay it is in most of the Crepidium section of 
Microstylis. For these reasons, I think that these plants 
should be referred to the genus Liparis. The colour of the 
flowers of both these species is not “dark blue” (as given 
doubtless from tickets written by native collectors), but a deep 
claret colour. (The Malay has no word in his own language 
for blue, and does not seem clearly to distinguish it, but always 
calls dark-red blue.) 
Liparis parvula, Ridl., so closely resembles young plants of 
L. Maingay?, Ridl., that it is quite impossible to distinguish 
it when out of flower. In specimens from Maxwell’s Hill, 
Larut Hills, Perak, I find the lip thickened by a longitudinal 
bar down the centre with a transverse bar at the upper end, 
which forms the lower wall of the fovea; while at the lower 
end it bifurcates, one arm going into each of the tails at the 
end of the lip. The margins of the lip are much thinner; and 
on the tails are numerous unicellular processes, doubtless 
rudiments of laciniation. 
Liparts (§ Cortirorim) LAcERATA, Ridl. in Journ. Linn. Soc. 
(Bot.), xxii, (1886) p. 284. 
Hab. Perak: Scortechini, &e. 
Kedah: Gunong Rayah, 0. Curtis! Borneo. 
On trees in dense jungle. Flowers white, with orange lip. 
Q 2 
