"are among the most beautiful of Orchids, many of them uniting every good quality that a plant can possess,—rich, evergreen, and regularly-curved foliage,—a graceful habit,—flowers of peculiar elegance. ... These plants are of easy culture, and if properly attended to are seldom out of order. They are found in the hottest parts of India and other warm countries, growing on the branches of trees, generally on such as overhang streams of water; and to grow them in anything like perfection, the climate in which they grow wild must be imitated as nearly as possible."