Cattleya trianae Linden & Reichenbach f. (1860.)
 
Native to Colombia; it was discovered by Sigmund Rücker in the Magdalena River area. In its natural habitats became rare due to extensive, indiscriminate collecting.
   The flowers can be as large as 18 cm (7 inches) across.
Cattleya trianae var. imperatrix
J.-J. Linden et al.: Iconographie des Orchidées. pl. DXXVIII
Cattleya labiata Trianae Alba
Reichenbachia Volume I, Sries I. (1886.)