ONCIDIUM BARKERI. 
(Mr. Barker’s Oncidium.) 
Class. 
GYNANDRIA. 
Order. 
MONANDRIA. 
Natural Order. 
ORCHIDACE^E. 
Generic Character.— Perianth showy. Sepals often 
ndulated, lateral ones sometimes connate with the 
iwer part of the labellum. Petals similar. Labellum 
lrgest, spurless, continuous with the column, variously 
)bed, tubercled or crested at the base. Column free, 
ami-cylindrical, winged at the top on both sides. 
Inthers usually two-celled ; rostellum sometimes 
hortened, sometimes elongated and beaked. Pollen - 
lasses two, furrowed behind ; caudicula plain ; gland 
blong. 
Specific Character — Pseudo-bulbs oval, compressed, 
lunt-edged, with a furrow or two passing down each 
ide. Leaves small for the size of the plant, two to 
ach pseudo-bulb, of an oblong-lanceolate form, with 
long sheathing striated footstalk, which is distinctly 
rticulated in the middle. Flowers disposed in a 
imple curved raceme, and consist of from five to 
seven in number. Sepals and petals alike in form and 
colour, linear-lanceolate, wavy, spreading, or turned 
back, the lateral very slightly adhering at the base ; 
they are covered with deep rich brown spots and 
bands on a pale cinnamon-coloured ground. Lip pure 
yellow, without spotting, much paler on the under 
side, and longer than the sepals ; middle lobe large, 
broader than long, slightly pointed at the top, which 
curves inwards in the manner usual in this genus ; it 
is distinctly stalked : lateral lobes flat, oblong, trun- 
cate, with rounded angles, one-third the breadth of 
the middle lobe. Crest consists of an anterior tubercle 
slightly three-lobed and hollowed out in front, and of 
a depressed, two-lobed elevation immediately behind 
it. Column unusually short, pale-yellow, with a pair 
of rounded oblong wings .—Lindley, in Sert. Orchid., 48. 
This fine species of Oncidium was imported from Mexico some years ago, by 
dr. Barker, in whose collection it flowered in 1841, when it received its present 
lame by Dr. Lindley, who published a notice of it in the Botanical Register of 
hat year, No. 174 of the miscellaneous matter. It has, since that period, flowered 
a several other places, first with Mrs. Lawrence, at Ealing Park ; also in November 
ast with J. W. Schroder, Esq., Stratford Green, Essex, where our drawing was 
aade; and latterly, during February and March of the present year, at Chats- 
rorth. 
Like the other species of Oncidium, this requires a hot and very damp situation, 
nd also in its growing state a liberal supply of water ; but when it has perfected 
ts summer’s growth, it should be gradually dried off, and have a rest for about 
hree months in a cool and dry temperature. It may either be placed in a basket 
VOL. XIV,-— NO. CLXI. 
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