40 DB,. H. F. HANCE's srPPLEMENT TO 



has no aerial roots, subcoriaceo-membranaceous leaves about 1 

 inch long and 3g 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 refiexed bracts. "Whether this latter be one of Blame's spe- 

 cies, I have no means of ascertaining. ' 



38. Zeuxine tripleura, Lindl. in Journ. lAnn. Soc. i. 186. ( = Tripleiira 



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 tiat. Upper portion of stem 

 clothed with distinct sheaths, contrary to Lindley's statement. 

 Raceme dense, about 1| 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. WaUich. 



39. Tropidia grandis, sp. nov. : glaberrima ; foliis elliptico-lanceolatis 



acutis 7-neiviis 8-10 poll, longis medio 2^ poll, latis, pedunculo ro- 



busto lO-pollicari vaginis 3 aphyllis scariosis lanceolato-linearibus in- 



structo, spica corymbosa, floribus poUicaribus, bracteis lato-linearibus 



scariosis ovarium subiEquantibus. 



In the Happy- Yalley woods, July 1866 (Exsicc. n. 13343). 



Not known from elsewhere. Differs much in habit and aspect 



from T. cv/reuligoides, Lindl., by its long vaginate peduncle, large 



flowers, and leaves like those of a Phaim. Schauer's plate of his 



