New Orchids from Yunnan and Northern Burma 
BY 
W. W. SMITH, M.A. 
Tue orchids described in the following pages were collected. 
chiefly in the temperate and sub-alpine areas of S.W. Yunnan 
and the Burmo-Chinese frontier. The greater part of the 
material was obtained by Mr George Forrest and the remainder 
by Captain Kingdon Ward and the late Mr Reginald Farrer. 
I have omitted reference to species previously recorded from 
Yunnan and Burma respectively, but in addition to the new 
species I have made note of orchids not previously found in thése 
areas. The number of species added to the flora of the area— 
whether new species or new records—is considerable. This may 
be accounted for in the first place by the close affinity of the 
flora of that portion of Yunnan centring round Tengyueh with 
the flora of Upper Burma. Many well-known Burmese orchids 
are represented in this corner of China and are not found further 
north or east. A huge lava-bed near Tengyueh at an elevation 
of some 5,000 feet—overgrown by a dense matted jungle of 
shrubs and climbers—was found by Forrest to be rich ™m 
Orchideae of pronounced Burmese affinity. Further the sub- 
alpine flora of the Burmese frontier is little known and ground 
orchids appear to form a considerable element thereof. The 
specimens obtained from the frontier by Kingdon Ward and 
Farrer indicate that genera such as Habenaria have a develop- 
ment there akin to what obtains in the Eastern Himalaya. What 
has been found already on the Burmese side of the frontier can 
represent only a tithe of the alpine orchid flora of the area. As 
may be expected there are species common to the area and to 
Yunnan, as well as species common to the area and the East 
Himalaya. Interesting extensions eastwards are Risleya atro- 
purpurea, King et Pantling, from the East Himalaya, Eriodes 
barbata, Rolfe, from the Khasias, Habenaria urceolata, Clarke, 
from the East Himalaya and the Khasias. 
The paper may be looked upon as supplementary to previous 
papers on the Orchideae collected by Forrest. The orchids ob- 
tained by Forrest during his expeditions in the years 1904-05 
were dealt with by Mr Rolfe in the Notes R.B.G. Edin., viii- 
(x913), pp- 19-29. “Those resulting from the explorations of the 
year 1906 were identified and described by Dr. Schlechter in the 
[Notes, R.B.G., Edin., Nos. LXIII-LXIV, November 1921.] 
