M. ] ORCHIDAOEJE. 189 



convolute throughout its length, broadly elliptic-oblong or subquad- 

 rate when spread out ; margins fimbriate-serrate except at the 

 cuneate and clawed base ; apex obtusely cuspidate ; upper surface 

 with a broad central grooved band villous towards the apex ; vein? 

 reddish-purple, bifurcating within the margin. Column nearly | in. 

 long, its narrow elongate foot with a small ovate laciniate nectary 

 at its base; mentum elongate, slightly curved- and spur-like. 

 Anther minutely papillose outside, its lip denticulate. 



Delira Dun (Gamble) on trees. Flowers June-August. DISTRIB.: 

 (iarhwal Himalaya, up to 3,000 ft. Recorded also as occurring on 

 the Nilgiri Hills. It is closely allied to D. macrostachyum, Lindl 

 a species of S. India and Ceylon. 



5?BULBOPHYLLUM, Thouars ; Fl. Brit. Ind. v, 752. 



Epiphytic herbs. Pseudobulbs from a creeping rhizome, rarely 

 none, 1 (rarely 2)-leaved. Flowers on scapes from the rhizome 

 and usually close to the pseudobulbs, solitary, capitate, umbellate, 

 or in spikes or racemes. Sepals subequal or the lateral pair rather 

 longer than the dorsal one and free or connate under the lip. 

 Petals usually smaller than the dorsal sepal. Lip jointed on the 

 foot of the column, mobile, small and usually much recurved. 

 Column very short, often 2-aristate at the apex. Anther 2-celled ; 

 pollinia 4, free, the two inner smaller (rarely suppressed). Species 

 nearly 200, chiefly in tropical and sub-tropical Asia, a few in Africa, 

 America and Australia. 



B. polyrhizum, Lindl. Gen. and Spec. Orch. 53 ; HL in F. B. 

 I. v, 767 ; Ann. R. Bot. Gard. Calc. V, pt. 7, 15, t. 23 ; K. and P. 

 id. viii, 70, t. 95 ; Duihie id. ix, pt. 2, 105. 



Rhizome thread-like, branching; pseudobulbs crowded or distant, 

 globular or ovoid, smooth, base broad. Leaf 2J in. long, narrowly 

 oblong, subacute, slightly narrowed to the sessile base, deciduous 

 before the flowers open. Scape filiform, about 4 in. long, the sub- 

 erect peduncle longer than the raceme, bearing 1 or 2 minute bracts ; 

 raceme inclined. Flowers about 6, distant, secund, pale-yellow, in. 

 long ; floral bracts minute, oblong, about as long as the short stalk of 

 ovary. Sepals spreading ; dorsal one ovate, concave ; lateral pair 

 longer, oblong-lanceolate, subacute, 3-nerved. Petals much shorter 

 than the sepals, broadly ovate, acute, I -nerved. Lip stalked, 

 deflexed, oblong, obtuse, scaberulous. Column shortly toothed, its 

 foot short and slightly curved. Anther papillose, its lip acute. 



