Cattleya maxima which has dark purple veins and a yellow area in the middle. Dorsal sepal narrowly elliptic; lateral sepals elliptic lanceolate; petals elliptic with wavy margin; lip folded forming a tube, with the front margin curly and wavy. Column slender and arched. "Cattleya maxima" occurs as an epiphyte on trees in dry forests from 100 to 1800 m of elevation, from Venezuela to northern Peru. The upland variety can be found growing on rocky slopes. Cattleya maxima Cattleya maxima is a species of orchid in subfamily Epidendroideae found from Venezuela to Peru. Epiphytic herb with club-shaped pseudobulbs, up to 39 cm.
Basics of blue flower colouration of co-pigmentation, intermolecular and intramolecular. In the first type co-pigment is bound to anthocyanin by non-covalent bond (hydrogen bond, hydrophobic interaction, ionic interaction). In the second type, we can observe covalent acylation of the glycosyl moiety of anthocyanin. Intramolecular co-pigmentation has stronger effect on the colour. This type of protective stacking is called also a sandwich type stacking and is a very common mechanism in the formation of blue flower colour. Tirantin present in "Clitoria ternatea" (butterfly pea) and phacelianin present in "Phacelia campanularia" are examples of pigments with intramolecular co-pigmentation. Metal complexation: Often blue flower colour is correlated with