They are distributed in the mountains and foothills of Himalaya, India, Myanmar, Thailand, Laos, Vietnam, and China and are well adapted to cold temperatures and even frost. A few, however, prefer warmer temperatures. They grow in well-drained habitats and on rocks covered with moss at altitudes between 600 and 4200 m.
The sympodial growth habit of terrestrial ''Pleione'' orchids is unusual. They have relatively large, spongy, almost globular or ampulliform pseudobulbs, narrowed at the apex. Every pseudobulb is only active for one year and carries one or two pleated parallel-veined , with a length of 15-30 cm. These drop off before winter. The pseudobulb stays dormant, till a new one starts to develop. This one produces new roots and a short pedicel. This pseudobulb remains active till the end of the bloom. Then the whole cycle starts all over again.
The big, showy flowers originate from new shoots formed at the base of the pseudobulb. They are pink to purplish, white or yellow, while the fringed, tubular is often paler or white, with yellow, red or purple dots and stripes. The flowers of the mountain species start blooming in spring, while the new shoots develop. The flowers of the orchids, growing in warmer climates, bloom in autumn, when the leaves have dropped.
They are very closely related to the equally beautiful genus ''Coelogyne'' and were once considered part of it.
They are easily grown by the layman, easy to propagate and are among the most popular orchids. They are much in demand for hybridization.
Species
*''Pleione albiflora'' .
*''Pleione aurita'' .
*''Pleione braemii'' .
*''Pleione bulbocodioides''
*''Pleione chunii'' .
*''Pleione coronaria'' .
*''Pleione formosana'' : Taiwan Pleione .
*''Pleione forrestii'' - to N. Myanmar).
*''Pleione grandiflora'' (China .
*''Pleione hookeriana''
*''Pleione humilis'' .
*''Pleione limprichtii'' : Hardy Chinese Orchid .
*''Pleione maculata'' .
*''Pleione microphylla'' .
*''Pleione pleionoides'' .
*''Pleione praecox'' .
*''Pleione saxicola'' .
*''Pleione scopulorum'' .
*''Pleione vietnamensis'' .
*''Pleione yunnanensis'' .
It has been suggested that ''P. bulbocodioides'', ''P. limprichtii'' and ''P. pleionoides'' could all be the same species.
Currently, there are two sections in the genus ''Pleione''
*section Pleione : ''P. x lagenaria, P. maculata, P. praecox, and P. saxicola.''
*section Humiles : ''P. albiflora, P. bulbocodioides, P. chunii, P. x confusa, P. coronaria, P. formosana, P. forrestii,¨P. grandiflora, P. hookeriana, P. praecox, P. x kohlsii, P. limprichtii, P. pleionoides, P. scopulorum, P. yunnanensis.''
Natural Hybrids
*''Pleione × barbarae'' .
*''Pleione × christianii'' .
*''Pleione × confusa'' .
*''Pleione × kohlsii'' .
*''Pleione × lagenaria'' ..
*''Pleione × taliensis'' .
the parentage of P x christianii is yunnanensis x forrestii and ''not'' bulbocodiodes x forrestii as has been wrongly quoted
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