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 occasionally jump on an insect. However, "Portia"s are not very good at catching moving insects and often ignore them, while some other salticid genera, especially the quick, agile "Brettus" and "Cyrba", perform well against small insects. When a "Portia" stalks another jumping spider, the prey generally faces the "Portia" and then either runs away or displays as it does to another member of its own species. The webs of spiders on which "Portia"s prey sometimes contain dead insects and other arthropods which are uneaten or partly eaten. "P. labiata" and some other "Portia"s such as "P. fimbriata" (in Queensland) and