119 
DENDROBIUM Barringtonije. 
Large-leaDed Dendrobium. 
GYNANDRIA MONANDRIA._Nat. Ord. ORCHIDE/E. 
Gen. Char. — Lahellum ecalcaratum, articulatum cum apice processus ungui-y 
formis, cujus lateribus petala antica adnata, calcar aemulantia. Masses 
pollinis 4>, parallelfB. — Br. 
Dendrobium Barringtonia; bulbo ovato compresso-tetragono, foliis sub- 
ternis ovato-lanceolatis plicatis strig,tis, scapo radicali solitario uni-r 
floro. 
D. Barringtoniae, Sw- Gen- et Sp. Orchid, p. 94 — Smith, in Rees' Cycl. — Br. 
in Hort. Kew. ed. 2. y. 5. p. 213. 
Epidendrum Barringtoniae, " Sm. Ic. Pictce, t. 15." 
Roots several, cylindrical, waved, fleshy fibres, springing from tlie lower part 
of the bulb. Bulb three inches or more in height, and nearly as much in 
diameter, compressed, but four-sided, each side having a slightly promi- 
nent line down its centre. From the summit of the bulb spring, in this 
specimen, three ovato-lanceolate leaves, nearly a foot in length, tapering 
at the base, acute at the extremity, waved at the margins, the surface 
many-nerved and plicate, the colour rather a dingy green, paler bepeath. 
At the base of the bulb, and from among the roots, arises a single scape, 
scarcely longer than the bulb, cylindrical, green, sheathed, with large, 
ovate, involute and striated, brown scales, 1 -flowered. Flower laxge : Pe- 
tals spreading, ovato-lanceolate, very obscurely striated, the three upper 
ones the smallest, the two larger uniting and running down at their base 
behind, into a large obtuse subdidymous spur, divided almost down to the 
base in front : all are of a rather deep yellow-green colour, tinged with 
brown at the extremity. Lip oblong, an inch and a half or more in length, 
but shorter than the petals, erecto-patent, almost pressed to the column, 
and articulated to it at the base, white at the lower half, the upper orange- 
flesh-coloured, three-lobed, the two side lobes small, incurved, the central 
one large, fleshy, subconcave, fringed at the margin : there are also two 
elevated fleshy lobes, occupying the lower half, decurrent with it, striated. 
Cohimn long, white, uniting the bases of the petals, and running down 
into the spur, the upper part free, slightly curved. Anther operculiform, 
whitish, slightly attached behind to the back of the column, 2-celled. 
Pollen-masses two, one of them was wanting in the present instance, and 
VOL. II. 
