Mystacidium differs in having the two distinct pollinia on 
distinct stalks attached to distinct glands. Angraxeum 
distichum, Lindl. (t. 4145) is Mystacidium distichum, 
Benth. 
Listrostachys bidens is a very free-growing and profuse- 
flowering orchid, and its fragrant flowers are pretty, 
though not brilliantly coloured. The plant from which 
the drawing was made was sent to Kew, from Old Calabar, 
in 1899, by Mr. J. H. Holland, then Curator of the 
Botanic Gardens there, now Assistant in the Museums at 
Kew. The recurved tooth over the entrance to the spur 
is a character this species possesses in common with JL, 
ashantensis, Reichb. f., and I. monodon, Reichb. f. Like the 
appendage over the spur in Cleisostoma, it must impede, 
to some extent, the visits of insects. Some of the species 
of this group require revision, and L. ashantensis is very 
near the present; but Lindley’s drawing represents the 
sepals, petals and labellum as crenulate, and the apex of 
the labellum as less decidedly three-lobed. 
Afzelius’s specific name refers to the leaves, and was 
only specially applicable to this species because he referred 
it to Limodorum. 
Descr.—Kpiphytical on trees. Stems elongated, many- 
leaved, about a quarter of an inch in diameter; internodes 
shorter than the leaves. eaves numerous, thick, ovate- 
oblong, between two and three inches long, obliquely two- 
lobed, lobes obtuse. Flowers sweet-scented, about half an 
inch long, numerous, in slender, pendent racemes. Sepals 
ovate, acute. Petals similar, but smaller. Lip heart- 
shaped, shortly three-toothed at the tip, and furnished 
with a recurved appendage over the entrance to the spur. 
Spur as long as the lip.—W. Borrixe Hemstey. 
Fig. 1, a flower; 2, column and longitudinal section of the lip showing the 
spur and the appendage over its mouth; 3, anther-cap; 4, pollinia :—all 
enlarged. 
