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-
Portia labiata specimens. The following table shows the hunting performance of adult females. In addition to "P. labiata", the table shows for comparison the hunting performances of "P. africana", "P. schultzi" and three regional variants of "P. fimbriata". A female "P. labiata" often hangs a capture web from pliant stems and leaves of shrubs and lower branches of trees, rather than from rocks and tree trunks. Males of "Portia" do not build capture webs. A female "P. labiata" more often pursues small jumping spiders and web spiders than larger prey. While it more often catches small jumping spiders than larger ones, it