Ludisia is a genus of orchids that contains just one species, Ludisia discolor, referred to as jewel orchid. They are native to Southern China, Northeast India, Thailand, Vietnam, the Philippines, Malaysia, Indonesia and Burma, and often cultivated.
As terrestrial orchids, these plants grow in soil and if you choose to cultivate them they should be kept in a pot. Notably, there also exist a few variants of Ludisia. ‘Alba’, which is an albino, is pale, while ‘Nigrescens’ is a deep black. Though extremely beautiful, these plants are rarely grown outside Asia, and you’d probably need to either consult a specialty source or travel a long distance to find one. But if you are interested in growing Ludisia plants, note that their natural conditions are in tropical forests with extremely hot and humid conditions, so only attempt to grow them if you can mimic the amniotic warmth they need to succeed. They flower annually, assuming they’ve been well-fed and kept, and the flowers last about a month or so before they die back. With their subtle, lovely colors, these plants make a great addition to any collection of tropical orchids, especially in a shade house.