128 DR. H. F. HANCE’S SUPPLEMENT TO 
has no aerial roots, subcoriaceo-membranaceous leaves about 1 
inch long and 32 lines broad and only slightly retuse at the apex, 
and a very thin and short, lateral not terminal, few-flowered 
raceme, with erect bracts. The flowers have all fallen. The 
other, which I found straggling over rocks in the Wongneichung 
valley in August 1861, has copious aerial roots, very rigid coria- 
ceous leaves more than 2 inches long, about 8 lines broad, and 
conspicuously emarginate, and a lateral raceme about 5 inches in 
length; flowers small, white, with a conspicuous obtuse spur, 
and reflexed bracts. Whether this latter be one of Blume’s spe- 
cies, I have no means of ascertaining. 
38. Zeuxine tripleura, Lindl. in Journ. Linn. Soc. i. 186. (=Tripleura 
pallida, Lindl. Gen. et Sp. Orch. 452.) 
Near the swamp at the head of the Happy-Valley waterfall ; 
discovered by Mr. Sampson in October 1868. Occurs also in 
Silhet and Sikkim. I believe I found a specimen of this plant 
(afterwards burnt at the destruction of the Canton factories) many 
years ago, by the road-side towards Pok fu lum, growing on inun- 
dated gravel; and if so, it exhales a powerful fragrance of cloves. 
Mr. Sampson is not clear on this point. About 10 inches high. 
Leaves four, membranaceous, narrowly lanceolate, acuminate, 2 
inches in length, of a pale reddish tint. Upper portion of stem 
clothed with distinct sheaths, contrary to Lindley’s statement. 
Raceme dense, about 14 in. long. Flowers yellowish white, sub- 
tended by extremely thin, white, 3-nerved, lanceolate, setaceo- 
acuminate bracts, ciliate, with articulate hairs about as long as 
the flowers. Labellum thickened at the base, with erect, undu- 
late margins, narrowed in the middle, and then widening to the 
point, which is emarginate. Ovary clothed with crisp, articulate, 
dirty white, glandular hairs. My solitary specimen from Mr. 
Sampson agrees well with two others in my possession gathered 
in Silhet by Dr. Wallich. 
39. Tropidia grandis, sp. nov.: glaberrima ; foliis elliptico-lanceolatis 
acutis 7-nerviis 8-10 poll. longis medio 23 poll. latis, pedunculo ro- 
busto 10-pollicari vaginis 3 aphyllis scariosis lanceolato-linearibus m- 
structo, spica corymbosa, floribus pollicaribus, bracteis lato-linearibus 
scariosis ovarium subzequantibus. 
In the Happy-Valley woods, July 1866 ¢Exsicc. n. 13343). 
Not known from elsewhere. Differs much in habit and aspect 
from T. curculigoides, Lindl., by its long vaginate peduncle, large 
flowers, and leaves like those of a Phaius. Schauer’s plate of his 
