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.
Flowering Locus C produce a number of generations during one summer ("summer-annual"), or (b) flower only after vernalization ("winter-annual" or "late-flowering"). This kind of variation can also be provided by variation in the "FRIGIDA" ("FRI") gene. Flowering Locus C Flowering Locus C ("FLC") is a MADS-box gene that in late-flowering ecotypes of the plant "Arabidopsis thaliana" is responsible for vernalization. In a new seedling "FLC" is expressed, which prevents flowering. Upon exposure to cold, less "FLC" is expressed (to a degree depending on the amount of cold), and flowering becomes possible. "FLC" is extensively regulated through epigenetic modifications and transcriptional control. The expression