DENDROBIUM acevo. 
White single-flowered Dendrobium. 
GYNANDRIA MONANDRIA.—Nar. Orv. ORCHIDE. 
Gen. Cuar.—Labellum ecalcaratum, articulatum cum apice processus uns 
guiformis, cujus lateribus petala antica adnata, calcar emulantia. Massa 
pollims 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 scaly 
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, imperfectly 3- 
lobed, lateral lobes very small, the central one slightly recurved, and 
having a large, yellow, oblong tubercle near the centre. Column linear- 
oblong, united at the base behind, with the petals plane in front, having 
the quadrangular concave stigma near the top. At the extremity is 
placed the deciduous anther, operculiform, conical, imperfectly 2-celled, 
and having 2 pairs of yellowish-white, waxy pollen-masses, of which the 
inner lobes are the smallest. Germen very long, pedunculiform, striated, 
quite straight. 
From the stove of the Liverpool Botanic Garden, where it 
was received by Messrs SHEPHERD from Jamaica, through the 
favour of Mr WILES. 
VOL. IL. 
