Cattleya aclandiae Cattleya aclandiae Cattleya aclandiae ("Lady Ackland's cattleya") is a species of orchid from the genus "Cattleya", named in honor of Lady Lydia Elizabeth Ackland, wife of Sir Thomas Dyke Acland, 10th Baronet who was the first European to grow the plant successfully. The illustration of the plant which accompanied its first description was based on a drawing by Lady Ackland. The genus was named in honour of William Cattley, a prominent British merchant and horticulturist. "Cattleya aclandiae" is found growing on tree limbs and trunks in the Brazilian state of Bahia. It has a very small natural range and is
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