Epiphytal. _Pseudobulbs_ oblong-ovate, compressed, diphyllous. _Leaves_ ligulate-oblong, acute, channelled and narrowed towards the stalk-like base, of a cheerful green colour. _Scape_ radical, supporting a many-flowered raceme exceeding the leaves, and having small acute bracts at the base of the pedicels. Flowers large and beautifully spotted; _sepals_ ovate acuminate, the dorsal one rounded at the base into a short broadish claw, the margins revolute and undulate, white, with a few bold irregular blotches of brownish crimson, of which one is placed near the apex, and another forms an irregular transverse bar across the centre; the internal ones narrowing towards the base; _petals_ broadly ovate acuminate, narrowed into a claw at the base, the margins entire, undulated, white like the sepals, with three or four rounder and smaller spots; _lip_ oblong-ovate, with the shortly cuspidate apex recurved, the margins toothletted and much crisped, white, with a rich yellow stain on the disk, and a broad brown-crimson blotch on the anterior portion, the edges of the produced lobes inflected yellow striped with red, and broken up into a few short acute teeth; from its base proceed three blunt yellow ridges, of which the central one stops short with a blunt point, and the two side ones are continued into acute projecting yellow horns, having about midway an erect tooth on the upper margin. _Column_ arcuately clavate, yellowish, winged, the wings white stripped with brown, toothed in the upper part, the teeth large, irregular, and set on behind the margin of the brownish prominent edge of the stigmatic cavity. Odontoglossum Alexandræ Cooksonii, _Williams and Moore_, supra. It is with the greatest pleasure that we are now enabled to present to the notice of our readers an illustration of this most splendid variety, which is, no doubt one of the best of the spotted forms of the Princess of Wales’s Odontoglot, _Odontoglossum Alexandræ (crispum)_. We are greatly indebted to N. C. Cookson, Esq. of Wylam-on-Tyne, in whose honour it is named, for his kindness in sending such ample materials for figuring so splendid a variety. We are constantly receiving examples of charming forms of this beautiful Odontoglot, which is sought after so much by those who grow cool Orchids, for the plants take no more, or but little more room or heat than the commonest greenhouse plants. Indeed, they are quite easily grown when they get the proper treatment, and are planted in proper material. They must be kept cool during the summer months; and in winter the thermometer may range from 45° to 55°.