Cattleya maxima 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. or taller with one leaf at the top (total height of pseudobulb and leaf about 61 cm). Leaf oblong or broadly oblong, rounded at apex, light green, up to 35 cm. long and up to 6 cm. wide, thick and fleshy. Inflorescence stem up to 30 cm long, with 3-6 (upland variety) or 12-15 (lowland variety) flowers. Flowers 12–15 cm wide, with lilac or pale rose sepals and petals, except the lip or labellum,
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