Cattleya purpurata spike. The flowers are long-lasting and fragrant. "Cattleya × elegans" is a hybrid orchid with a formula hybridae "Cattleya purpurata" (Lindl. & Paxton) Van den Berg (2008) × "Cattleya tigrina" A.Rich. (1848). It is found in South and South-East Brazil. 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
ABC model of flower development "Arabidopsis", where they are also involved in controlling the development of carpels and the ovule and even with structures related to seed dispersal. The appearance of interesting phenotypes in RNA interference studies in "Petunia" and tomato led, in 1994, to the definition of a new type of function in the floral development model. The E function was initially thought to be only involved in the development of the three innermost verticils, however, subsequent work found that its expression was required in all the floral verticils. ABC model of flower development The ABC model of flower development is a scientific model