Cattleya purpurata Cattleya purpurata Cattleya purpurata, known in the past as Laelia purpurata and Sophronitis purpurata, is native to Brazil where it is very popular among orchid growers. It is an epiphyte that is found in the canopy of tall trees near coastal areas, in the Brazilian states of Rio Grande do Sul, Santa Catarina and São Paulo. The orchid favors bright light and cool to warm conditions and is relative easy to cultive. C. purpurata has been used extensively as a parent in hybridizing with Cattleyas. Cattleya purpurata blooms from late spring to fall with three to five flowers on a
Basics of blue flower colouration This phenomenon we can observe in the morning glory (Ipomoea tricolor) and Japanese blue morning glory (Ipomoea nil) petals. During the flower development we can observe change of the flower colour form purple to blue. Morning glory has just one delphinidin type anthocyanin and the composition of it does not change during the flower development, but change of the colour is caused by increase of pH in vacuole of coloured cells from 6.6 in buds to 7.7 in fully matured flowers. During the early stage of development acidic pH is maintained by proton pumps, on the latter stage K+/H+ exchanger