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{{Taxobox
| color = lightgreen
| name = Peacock orchid
| image = Pleione-limprichtii-formosana-unknown-levels.jpg
| image_width = 250px
| image_caption = ''[[Pleione Flower]]''
| regnum = [[Plant]]ae
| divisio = [[Flowering plant|Magnoliophyta]]
| classis = [[Monocotyledon|Liliopsida]]
| ordo = [[Asparagales]]
| familia = [[Orchidaceae]]
| subfamilia = [[Epidendroideae]]
| tribus = [[Coelogyneae]]
| subtribus = [[Coelogyninae]]
| genus = '''''Pleione'''''
| genus_authority = [[D.Don]]
| subdivision_ranks = Species
| subdivision =
<center>See text</center>
}}

'''Peacock orchids''' ([[genus]] '''''Pleione''''') are a small group of beautiful, predominantly [[terrestrial plant |terrestrial]] but sometimes [[epiphyte|epiphytic]] or [[lithophyte|lithophytic]], miniature [[orchid]]s. This genus is named after [[Pleione (mythology)|Pleione]], mother of the [[Pleiades (mythology)|Pleiades]] (in [[Greek mythology]]) and comprises about 20 [[species]]. Other common names of this genus include '''glory of the East''', '''Himalayan crocus''', '''Indian crocus''' and '''windowsill orchid'''. The genus '''''Diploconchium''''' <small>[[Johannes Conrad Schauer|Schauer]]</small> is generally included here. The [[Gladiolus|Gladiolus callianthus]] is also sometimes commonly referred to as a "peacock orchid," however it has no relation to the pleione flower.

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 [[pseudobulb]]s, narrowed at the apex. Every pseudobulb is only active for one year and carries one or two pleated parallel-veined [[Leaf|leaves]], 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 [[flower]]s originate from new shoots formed at the base of the [[pseudobulb]]. They are pink to purplish, white or yellow, while the fringed, tubular [[labellum|lip]] 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]]'' (China - W. Yunnan to N. Myanmar).
*''[[Pleione aurita]]'' (China - W. Yunnan).
*''[[Pleione braemii]]'' (China - Yunnan).
*''[[Pleione bulbocodioides]]'' (C. China to SE. Tibet)
*''[[Pleione chunii]]'' (S. China).
*''[[Pleione coronaria]]'' (C. Nepal).
*''[[Pleione formosana]]'' : '''Taiwan Pleione''' (SE. China, N. & C. Taiwan).
*''[[Pleione forrestii]]'' (China - NW. Yunnan)- to N. Myanmar).
*''[[Pleione grandiflora]]'' (China (- S. Yunnan to NW. Vietnam).
*''[[Pleione hookeriana]]'' (Nepal to China - SE. Yunnan to N. Guangdong- to Indo-China)
*''[[Pleione humilis]]'' (C. Himalaya to Myanmar).
*''[[Pleione limprichtii]]'' : '''Hardy Chinese Orchid''' (China - C. Sichuan).
*''[[Pleione maculata]]'' (C. Himalaya to China - W. Yunnan).
*''[[Pleione microphylla]]'' (China - Guangdong).
*''[[Pleione pleionoides]]'' (C. China).
*''[[Pleione praecox]]'' (WC. Himalaya to China - S. Yunnan). (type species)
*''[[Pleione saxicola]]'' (E. Bhutan to China - NW. Yunnan).
*''[[Pleione scopulorum]]'' (India - NE. Arunachal Pradesh to China - NW. Yunnan).
*''[[Pleione vietnamensis]]'' (SC. Vietnam).
*''[[Pleione yunnanensis]]'' (SC. China to N. Myanmar).

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 (includes the autumn-flowered species) : ''P. x lagenaria, P. maculata, P. praecox, and P. saxicola.''
*section Humiles (includes the spring-flowering species) : ''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'' (''P. bulbocodioides'' × ''P. grandiflora'') (China - SE. Yunnan to N. Vietnam).
*''Pleione × christianii'' (''P. yunnanensis'' × ''P. forrestii'') (China - W. Yunnan).
*''Pleione × confusa'' (''P. albiflora'' × ''P. forrestii'') (China - W. Yunnan).
*''Pleione × kohlsii'' (''P. aurita'' × ''P. forrestii'') (China - W. Yunnan).
*''Pleione × lagenaria'' (''P. maculata'' × ''P. praecox'').(Assam to China - W. Yunnan).
*''Pleione × taliensis'' (''P. bulbocodioides'' × ''P. yunnanensis'') (China - W. Yunnan).

the parentage of P x christianii is '''yunnanensis''' x forrestii and ''not'' bulbocodiodes x forrestii as has been wrongly quoted (P. Christian)

==References==
*Phillip Cribb & Ian Butterfield : The Genus Pleione" (Second Edition 1999) Natural History Publications in association with the Royal Botanic Gardens, Kew. ISBN 983-812-040-5
*C. Z. Tang & I. Butterfield. 1983. The genus Pleione. Curtis’s Bot. Mag. 184: 93--147.

[[Category:Orchid genera]]

Peacock orchid - Revision history

MediaWiki default at 10:06, 23 July 2007