Cattleya rex Cattleya rex Cattleya rex is a species of epiphytic orchid of showy white flowers, native to montane forests in Peru and Bolivia. Epiphytic herb with cylindric or spindle-shaped pseudobulbs, up to 35 cm. high, with one leaf at the top. Leaf oblong or elliptic-oblong, obtuse, light green, up to 35 cm. long and up to 6 cm. wide, coriaceous. Inflorescence up to 20.3 cm. high, with 3 to 6 (or 10) flowers. Flowers large and showy, up to 17 cm wide, with sepals and petals being cream-colored or ivory white, except the lip or labellum, which is colored with yellow,
Cattleya labiata plant has a pseudobulb under every leaf to store water and nutritive substances during the short dry season. In the wet season new leaves grow rapidly, producing a large flowered inflorescence. Flowers are white or lavender colored with a darker spot in the lip. Pollination is performed by insects, usually by a scent-collecting male euglossine bee. The result is a capsule with a very large number of seeds (10,000-20,000). The diploid chromosome number of "C. labiata" has been variously determined as 2"n" = 40, 41, and 46. The haploid chromosome number of "C. labiata" has been variously determined as "n"