Several travellers, including Schlim, Wagener, Warszewicz, and Weir, appear to have met with the plant in various localities in New Granada, but always at a great elevation, hence it must of course be classed among the coolest section of Orchids. It has flowered in the gardens of the Horticultural Society, to which it was sent by their zealous collector Mr. Weir, and also in the collection of Mr. Rucker, where Mr. Fitch made his drawing in the spring of last year (1865). DISSECTIONS.--1. Lip and column, seen sideways; 2. Ditto seen in front: _magnified_. Plate XII [Illustration: Odontoglossum gloriosum.] PLATE XII. ODONTOGLOSSUM GLORIOSUM. FINE ODONTOGLOSSUM. O. (EUODONTOGLOSSUM, _Lindl._) pseudobulbis ovatis confertis diphyllis, foliis lato-lanceolatis acutis scapo valido paniculato multifloro brevioribus, sepalis petalisque oblongo-ligulatis acuminatis stellatis, labello a basi cordatâ ligulato acuminato, basin versus utrinque angulato, ceterum hinc illinc denticulato, callo depresso quadrilobulo nunc quadridentato ante basin, columnâ clavatâ apice utrinque cirrho setaceo medio inferne unidentato. ODONTOGLOSSUM GLORIOSUM, _Reichenbach fil._ _Bonpl._ ii. 278; _idem in Gardeners' Chronicle_ (_New Plants_, _n._ 293, 1865), _et in Walpers_, _Annales_, vi. _fasc._ 6. Habitat in N. GRANADA, Soto. 8-9000 p., _Schlim_; Ocaña, 6000 p., _Wagener_; Bogotá, _Weir_. DESCRIPTION. PSEUDOBULBS _ovate, 2-leaved, growing closely together, 3 or 4 inches long, turning to a dark colour when old_. LEAVES _broadly-lanceolate, acute, shorter than the stout much-branched many-flowered panicle_. FLOWERS _exceedingly variable in size and form and colour; the example in the Plate representing one of the largest varieties, and the vignette one of the least. Usually they are about 2 inches across, of a pale ochrish or greenish-yellow, blotched, or sometimes minutely spotted, with dark-chestnut_. SEPALS _and_ PETALS _nearly equal, lanceolate, acute (often narrower than in the figure), slightly waved_. LIP _ligulate, smooth (not crisp) at the margin, very much attenuated in front, but heart-shaped at the base, towards which it is abruptly carinate, and furnished with 2 upright large sharp double teeth_. COLUMN _clavate, with hairy cirrhi on either side near its apex, and a solitary tooth near the middle_.