Cattleya walkeriana walkeriana" has been twice determined as 2"n" = 40; the diploid chromosome number of the variety "C. walkeriana" var. "princeps" has been determined as 2"n" = 80. Cattleya walkeriana Cattleya walkeriana (Walker's cattleya) is a species of orchid. It differs from most species of "Cattleya" by having inflorescences which arise from the rhizome instead of from the apex of the pseudobulb. In its native habitat (Brazilian Central Plateau) it grows as either an epiphyte or a lithophyte, sometimes in full sun. Pseudobulbs are relatively short, bulbous or fusiform, with one or two ovate leaves at the apex. Inflorescence is one-
Cattleya and shape from the rest of the flower and covers in part the flower column forming a tube. There are four polliniums (bag-like organs that contain pollen). The fruit is a capsule with many small seeds. The genus was named in 1824 by John Lindley after horticulturalist William Cattley. Cattley obtained a specimen of then unnamed "Cattleya labiata" from William Swainson who had discovered the new plant in Pernambuco, Brazil, in 1817. The plant successfully bloomed under the care of Cattley and it became the type specimen from which Lindley described "C. labiata". Currently accepted species and subgeneric division within