142 
DENDROBIUM asun. 
White single-flowered Dendrobium. 
GYNANDRIA MONANDRIA.—Nar. Onv. ORCHIDER. 
Gen. Cuar.—Labellum ecalcaratum, articulatum cum apice processus un- 
guiformis, cujus lateribus petala antica adnata, calcar emulantia. Masse 
pollinis 4, parallele.—Br. 
Dendrobium album ; bulbis ellipticis compressis apice uni-trifoliis, pe- 
dunculis unifloris erectis, petalis sublanceolatis, labello oblongo ob- 
scure trilobo, medio tuberculo oblongo carnoso. 
Parasitic: Root a few simple zig-zag fibres. Bulbs clustered, about 2 inches 
long, elliptical, compressed, fleshy, green, having some large, brown, 
membranous scales at the base, and bearing at the extremity from 1 to 
3 linear, subacute, rather fleshy dark green leaves, complicate at the 
base, spreading, slightly keeled at the back, and furnished with a mid- 
rib 
Flowers solitary, erect, upon a short, upright peduncle, arising from a — 
sheath at the base of the bulbs. Petals erect, or slightly recurved at 
the point,. white, ovato-lanceolate, nearly equal in size, the three outer- 
most connected together at the base, and of them the two foremost form- 
ing a kind of double sack or pouch by their union. Lip almost equal in 
length to the petals, erect, yellowish-white, grooved, pe STE 
lobed, lateral lobes very small, the central one slightly recurved, 
having a large, yellow, oblong tubercle near the centre. Column linear- 
oblong, united at the base behind, with the petals plane mn peer rgd 
the quadrangular concave stigma near the top. At the e Be 
placed the deciduous anther, operculiform, conical, a tie ses the 
and having 2 pairs of yellowish-white, waxy pollen-masses, erli striated, 
inner lobes are the smallest. Germen very long, pone 
quite straight. 
From the stove of the Liverpool Botanic Garden, ars 
Was received by Messrs SHEPHERD from Jamaica, through the 
avour of Mr WILEs. 
VOL, Il. 
