Jt o 
g 
53 
Ceylon.—— This has pendulous stems like those of D. 
Pierardi, but of a delicate purple when young ; the leaves 
too are stained underneath and at the edges with the 
same colour. The flowers are as large as those of D. 
aggregatum, of a clear fawn colour, with the tips of the 
segments and lip stained with a deep rich violet. "There 
is moreover a scarlet spot in the middle of the lip. 
* + * 
98. D. revolutum (Lindl. in Bot. Reg. 1840, misc. 110); cau- 
libus obtusé ancipitibus, folis ovato-oblongis obtusis 
apice obliquis emarginatis basi subcarinatis, floribus 
solitariis oppositifoliis, sepalis petalisque acutissimis revo- 
lutis, labello carnoso convexo obtuso subtrilobo aut 
rhombeo per medium exarato (s. lamellis duabus inflexis 
parallelis instructo) lineis tribus discoloribus. ——Sinca- 
pore.——Flowers straw-coloured, and about the size of 
those of D. Pierardi, but their lip is fleshy, convex, 
almost lozenge-shaped, and marked with 3 brown lines. 
29. D. ezcisum (Lindl. in Bot. Reg. 1841. misc. 165); foliis 
lineari-oblongis obliqué retusis, floribus (solitariis ?) 
oppositifoliis basi squamatis, sepalis petalisque acumi- 
natis, labello oblongo acuto carnoso basi utrinque exciso : 
disco latè glanduloso, cornu pedicello feré dupló breviore. 
——Sincapore.——A small species with the habit of D. 
pulchellum, but with white inconspicuous flowers. 
30. D. aqueum (Lindl. in Bot. Reg. 1843. misc. 6. t. 54); 
31. 
foliis ovato-oblongis undulatis acuminatis, floribus patulis 
cornu brevi obtuso, sepalis petalisque ovatis, labelli tri- 
lobi pubescentis laciniä mediä ovatä denticulatä basi alte 
excavatä lateralibus latioribus rotundatis margine ante- 
riore serrulato. —— Bombay.——With the manner of 
growth of D. Pierardi, the pale watery green flowers of 
this are quite destitute of the attractive colours of that 
gay species, and are entirely different in the structure of 
the lip, which is furnished with a large cavity, almost a 
pouch at the base of the middle lobe. It is also a much 
stouter plant with wavy leaves. 
D. longicornu (Lindl. in Wall. Cat. no. 1997. Bot. Reg. 
t. 1315. Gen. et Sp. Orch. no. 26); caulibus erectis 
hispidis flexuosis, foliis ovato-lanceolatis apice valdé 
obliquis, floribus fascieulatis v. solitariis terminalibus, 
bracteis ovatis acuminatis hispidis pedicello multo brevio- 
