370 orchid-geower's manual. 



D. WILLIAMSONI, Bay et Rchh. f. — A distinct and pretty species, with erect 

 fusiform stems, velvety with black hairs, the younger ones bearing numerous 

 oblong-ligulate unequally bi-lobed leaves, which are also velvety with short soft 

 hairs. The flowers are large, ivory-white ; the sepals slightly tinged with brown 

 on the outer surface, the lip bearing a large three-lobed blood-red spot on the 

 disk. This plant belongs to the nigro-hirsute section of this genus, and is some- 

 what difficult to establish. — Assam. 



D. XANTHOPHLEBIUM, Lindl. — A very pretty species with erect terete 

 angled stems about 1 foot long, and rather thicker than a swan's quill. The 

 leaves, produced on the young stems only, are linear-lanceolate and obliquely 

 cmarginate. The flowers grow from the joints of the older leafless stems, 

 generally in pairs, the sepals and petals being pure white, and the lip three-lobed, 

 the side lobes large, erect, veined with deep orange, the front lobe also roundish, 

 but much undulated, downy, orange-yellow bordered with white as in the lateral 

 lobes. The spur is as long as the chin. This plant has been identified with the 

 D. ■marginatum of Bateman in Botanical Magazine quoted below, a name given 

 some years later than that here adopted. — Moulmein. 



Fig. — Bot. Mag., t. 5454 ; Batevian'it Second Cent. Oreh. PI., t. 105. 

 Syx. — O. marginatmn, 



DENDROCHILU M— See Platvclixis. 

 DiACEiIUM. — See Epidexdrum: bicornutum. 



DiPODIUM. 



(Tribe Vandeae, subtrihe Cymbidieae.) 

 A small genus of terrestrial Orchids, the species of which have been 

 divided by Reichenbach into two sections, one containing a few leafless 

 species, the other consisting of species with leaves, to which the plant 

 described below belongs ; they have branching roots and stems, the latter 

 attaining to some two feet in height ; these are furnished in the leafless 

 species, at short intervals, with brown scarioiis scales, and bearing on the 

 apex a large raceme of nearly regular flowers ; the lip is oblong and 

 clawed, two-eared at the base, bearded at the point ; the pollen masses 

 are two in number, each having a separate strap-like appendage, from 

 which it derives its generic title — two-footed ; they are natives of 

 Australia and New Caledonia. 



Culture. — Dipodiums should be placed in small well-drained pots, 

 using a mixture of peat and sphagnum moss. They require a moist 

 and close atmosphere, but in winter less moisture will sufiice. 



