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 the draglines of equal-sized females and then pitted some of them in contests. Other females avoided the draglines of the victors, and spent the majority of their time on draglines of the losers. Similar tests showed that females of "P. fimbriata" from Australia and "P. schultzi" from Kenya do not avoid draglines of a powerful fighter. In "P. labiata" and in some other species, contests between males usually last only 5 to 10 seconds, and only their legs make contact. When hunting, mature females of "P. labiata", "P. africana", "P. fimbriata" and "P. schultzi" emit olfactory signals that reduce the