From Gard. Chron., ser. 3:
If this is not showy, it is decidedly lovely, not withstanding its rather narrow, pale rose-coloured sepals and petals, the sepals having a thickened green apex. It is the lip that is so beautiful. The side laciniae are semi-oblong, half-heart-shaped at the base and apex, with a rose-coloured border, and the remainder, excepting the discoidal area, of the lightest purple. Mid-lacinia semi-oblong, emarginate, toothed, wavy, with two discoidal areas of the deepest mauve-purple. The remaining partis white. There are five rough central keels, the outer ones with exsilient triangles, five to seven in number. All these keels and triangles have a certain hue of brick-red. Column very strong, trigonous, curved, with a three-lobed anther-bed. Mid-lobe pistillar, side lobes with two or three teeth, all deep purple. Broken purple lines on the sides of the column, seven in front under the fovea, partly elevated in keels at the base, whose anterior surface is sulphur-coloured. Anther white. Pollinaria four, regularly Cattleyoid. I have a two-flowered peduncle with a rather thin withered sheath.
Mr. Franz Kramer, the leading gardener of Herr Rucker-Jenisch, at Kleinflottbek, imported it from Brazil as a hybrid between Cattleya intermedia and Forbesii. I have been kindly favoured with a stem that is more than a foot in length, the upper part nearly half an inch in diameter. There the longer superior joints are furrowed with blunt ribs. The three very coriaceous leaves are minutely crenulate at the reflexed margin, 6 inches long by 2 1/4 wide. The plant resembles a very tall specimen of Cattleya intermedia. The flower resembles the flowers of both species. It is a great satisfaction to dedicate this lovely plant to Mr. Franz Kramer, the persevering and successful head gardener of the park and gardens of Kleinflottbek, which earned their reputation by the work of Herr Senator Jenisch and his head- gardener, Mr. Kramer, sen.
Published in Gard. Chron., ser. 3 4: 323 in 1888.
Seed parent Cattleya forbesii
Pollen parent Cattleya intermedia.
Pictured in Dict. Icon. Orchid. Cattleya hybrid #312 in 1905.
Synonym of Cattleya Isabella (1878).
Note Kew Checklist (and PlantList) show it as a synonym of C. x isabellae Rchb.f. (published in Wochenschr. Vereines Beford. Gartenbaues Konigl. Preuss. Staaten 336 in 1859).