Cattleya walkeriana 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- or few-flowered, about 8" (20 cm) tall. Flowers are 4-5" (9-12 cm) across. Genetically "C. walkeriana" is close to bifoliate Cattleyas. The diploid chromosome number of "C.
Portia labiata of the prey species showed no evidence of affecting the results. Insects were represented by the house fly "Musca domestica". Unlike the Queensland variant of "P. frimbriata", "P. labiata" has no special tactics when hunting other jumping spiders. "P. labiata" does not prey on ants, but is preyed on by the ants "Oecophylla smaragdina" and "Odontomachus" sp. (species uncertain). "P. labiata" will sometimes approach a translucent nest containing another spider, and will usually wait facing the prey for up to several hours. Occasionally "P. labiata" leaps at the prey in the nest, but this is ineffective. Populations from Los Baños