PLATE IV. 
ODONTOGLOSSUM INSLEAYI, ۸ 
INSLEAY'S ODONTOGLOSSUM. 
O. (Evononroërossum, Lindl.) pseudobulbis ovatis compressis diphyllis, folis coriaceis 
oblongo-ensiformibus subundulatis apice recurvis racemo 5-10-floro erecto rigido bre- 
vioribus, sepalis petalisque oblongis subæqualibus undulatis infimis connatis, labello 
angusto obovato retuso basi auriculato, disci eristå apice biloba dilatatå utrinque in 
medio dente refracto auctá, columnæ alis incurvis cirrhatis. (Lindl. Fol. Orch.) 
ONCIDIUM INSLEAYI, Barker in Bot. Reg. 1840, Misc. 21; Bateman, Orchid. Mex. et Guat. t. 21; Van Houtte, Flore des Serres. 
1848, ¢. 62. 
Habitat in Mexico, Barker; Oaxaca, Loddiges ; 5-0000 ۰ 
DESCRIPTION. 
Pseuposuzes ovate, slightly furrowed, compressed, bearing 2 leathery, sword-shaped, sharp-pointed Leaves, which are 
less than a foot long, and like the rest of the plant of a glaucous hue. Boarn upright, longer than the leaves, bearing 
from 5 to 10 flowers, usually from 2 to 3 inches in diameter, but sometimes considerably more. Bracts few, 
about an inch long, occurring at intervals somewhat longer than themselves, and fitting tightly to the stem. ص۳۳۵‎ 
and Purats nearly equal, oblong, waved, the two lateral ones attached at their base, of a pale yellowish-green tint, 
crossed throughout their entire length by broad bands of reddish-brown. Txe narrow, obovate, turned a little back, of 
a bright yellow colour, bordered by a belt of red blotches ; on its disk are a group of tubercles, mounting two teeth on 
either side, and with cleft callus in front. Corumn-winas bent inwards, and resembling in form the antenne of an 
insect. 
This Odontoglossum was originally introduced from Mexico by the late Mr. Barker, of Birmingham, after whose 
gardener it was named by Dr. Lindley. It flowered with Mr. Barker somewhere about the year 1840, when a figure was pre- 
pared for the * Orchidaceæ of Mexico and Guatemala, but I had not then the opportunity of examining the plant, nor 
indeed did I ever actually see it in flower until the autumn of last year (1863) when I happened to meet with the 
specimen from which the illustration is derived, growing and blooming vigorously in the collection of Dr. Cauty, of 
Liverpool. The species had, in fact, virtually disappeared from collections during an interregnum of twenty years, and 
its reappearance is entirely due to the adoption of the rational system of cool treatment now happily prevailing, and 
under which it may be cultivated with the greatest ease. 
In habit O. Znsleay? is quite indistinguishable from O. grande ; and although its flowers are far inferior in beauty to 
those of that glorious species, they bear a certain sort of resemblance to them in their colouring and general arrangement. 
The structure is however entirely different, for while O. grande has no bristle-like appendages to its column, and 
therefore belongs to the section of the genus which has been called 又 ANmHoGLOSSUM by Dr. Lindley, the processes in 
question are clearly present (see Dissections) in the case of O. Zusleayi, thereby bringing it under the preceding 
section, to which the title of Evonoxrocrossux has been given by the same authority. The time and mode of flowering 
are also different in the two plants, for while in O. grande the flower-scapes appear almost simultaneously with the leaves, 
and are usually in perfection in July, those of O. Zusleayi are not produced until long after the pseudobulbs have been 
matured, nor do they expand their blossoms until late in the autumn. 
