Tas. 4640. 
DENDROBIUM aaquevum. 
Watery Dendrobium. 
Nat. Ord. OrcuiIpDEm.—GYNANDRIA MONANDRIA. 
Gen. Char. (Vide supra, Tas. 4352.) 
DENDROBIUM aqueum; caule tereti-compresso articulato striato, foliis distichis 
ovato-lanceolatis acuminatis striatis, sepalis petalisque late ovatis acutis 
patentibus, cornu brevi obtuso, labello subrhombeo-ovato trilobo supra pu- 
bescente, lobis lateralibus parvis obtusis incurvis terminali triangulari denti- 
_ culato-fimbriato nervoso disco medio excavato basin versus linea lata elevata. 
DENDROBIUM aqueum. Lindl. in Bot. Reg. 1843. Misc. n. 6. t. 54. 
Our first knowledge of this plant was from the Orchids in the 
collection of the late Rev. William Clowes ; and more recently 
we have received it from Bombay, through the kindness of our 
friend Mr. Law. Both these have blossomed. ‘The foliage is 
good, and it accompanies the flowers ; and what the blossoms 
want in colour is made up in size. 
_ Descr. Stems stout, jointed, compressed, striated, leafy (at the 
time of flowering), yellow-green. Leaves distichous, ovate, the 
upper ones smaller and lanceolate, all submembranaceous, sharply 
and suddenly acuminated, striated with the longitudinal nerves, 
dark green above, paler and yellower beneath. Flowers solitary, 
or two together, large, rising from the axils of the leaves, cream- 
white. Ovary club-shaped, tapering below into a peduncle. 
Petals and sepals uniform, spreading, broadly ovate, rather acute, 
nearly plane. Zp recurved from the middle, ovato-rhomboid, 
obscurely three-lobed ; two lateral lobes small, the intermediate 
one large, triangular; the lower half has an elevated ridge, and 
under its termination a depression, and that part has a deep 
yellow blotch ; the underside is glabrous, the upper surface very 
downy and striated, the margin of the terminal lobe fringed with 
soft cilia. Codwmn much prolonged at its base where it bears the 
labellum. Anther-case hemispherical. W. J. H. 
Big. 1. Column and ovary. 2. Pollen-masses. 3. Front view of the lip :— 
magnified. ¥ 
APRIL Ist, 1852, 
