There has been much controversy of late respecting this beautiful _Cattleya_, the true character of the flowers of which will be seen at once from our Plate, our artist having produced a very faithful representation of the richly-coloured blossoms. We have seen the flowers of two successive seasons from the very plant from which our drawing was taken, and have noted that they keep true to character as regards colour, and that in the second year the flowers were larger than in the first, which may be accounted for by the plant having become stronger and better established, the blossoms partaking of the general improvement. It must not, however, be expected that every purchaser will obtain a plant of the some character as that represented in our Plate, as we have seen but few that have proved to be equal to the one we figure. There is an abundant supply of plants imported as _C. Percivaliana_, but they vary greatly in merit—more so in this than in any other _Cattleya_ that has come under our notice. Many of the species of _Cattleya_ yield variety both as to the colour and size of their blossoms, though they are generally all good enough to cultivate or to use as decorative plants; but in this particular species or subspecies there are many that prove to be worthless, and unfortunately no one can tell whether individual plants will be good or had until the flowers expand. The good ones are really valuable, for there is no other _Cattleya_ in which the lip and throat are so richly coloured; even in the small-flowered forms there is a portion of this rich colouration to be found on the lip. Mr. Sander, the importer, has been no doubt deceived, and has suffered great loss through importing a large quantity of plants, of which many have had to be destroyed owing to their not being worth cultivating, since the bad forms cost as much to import as the good ones; while the collectors, when they do not see them in bloom, do not suspect that such inferior forms can exist amongst the good ones. We have seen other fine varieties, but none better than the one we have illustrated, and which we received from the superb collection of R. P. Percival, Esq., of Birkdale, Southport, after whom it is named. We received the flowers two years before we ventured to submit the drawing to our readers, and to vouch for its accuracy. We trust there may prove to be enough of the better forms imported to supply all who may desire to possess the plant in its true character.