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Polyspora : ウィキペディア英語版
Gordonia (plant)

''Gordonia'' is a genus of flowering plants in the family Theaceae, related to ''Franklinia'', ''Camellia'' and ''Stewartia''. Of the roughly 40 species, all but two are native to southeast Asia in southern China, Taiwan and Indochina. The remaining species, ''G. lasianthus'' (Loblolly-bay), is native to southeast North America, from Virginia south to Florida and west to Louisiana; ''G. fruticosa'' is native to the tropical rainforests of Central and South America, from Costa Rica to Brazil.
They are evergreen trees, growing to 10–20 m tall. The bark is thick and deeply fissured. The leaves are alternately arranged, simple, serrated, thick, leathery, glossy, and 6–18 cm long. The flowers are large and conspicuous, 4–15 cm diameter, with 5 (occasionally 6-8) white petals; flowering is in late winter or early spring. The fruit is a dry five-valved capsule, with 1-4 seeds in each section.
The species are adapted to acidic soils, and do not grow well on chalk or other calcium-rich soils. They also have a high rainfall requirement and will not tolerate drought.
Some botanists include ''Franklinia'' within ''Gordonia'', even though recent phylogenetic studies show that ''Franklinias closest living relationship is with the Asian genera ''Schima'' and not ''Gordonia'';〔Prince, L. M. and C. R. Parks. 2001. Phylogenetic relationships of Theaceae inferred from Chloroplast DNA sequence data. Amer. J. Bot. 88: 2309-2320.〕 it differs in being deciduous and flowering in late summer, not late winter. The draft ''Flora of China'' account of Theaceae in China splits ''Gordonia'' into two genera, with ''G. lasianthus'' retained in ''Gordonia'', and the Asian species transferred to ''Polyspora''; this treatment is not yet widely accepted.
''Gordonia chrysandra'' may have anti-inflammatory medicinal properties.〔CJ, Yang JZ, Shen ZF, Zhang DMFu HZ, Li.,"Potential Anti-inflammatory Constituents of the Stems of Gordonia chrysandra." ''J Nat Prod.'' 2011 Apr 7;〕
==Species==
There are about 40 species, including:
*''Gordonia anomala''
*''Gordonia balansae''
*''Gordonia ceylanica''
*''Gordonia curtyana''
*''Gordonia fruticosa''
*''Gordonia hirta''
*''Gordonia hirtella''
*''Gordonia javanica''
*''Gordonia lasianthus''
*''Gordonia maingayi''
*''Gordonia multinervis''
*''Gordonia penangensis''
*''Gordonia scortechinii''
*''Gordonia shimidae''
*''Gordonia sinensis''
*''Gordonia singaporeana''
*''Gordonia speciosa''
*''Gordonia tagawae''
*''Gordonia taipingensis''
*''Gordonia villosa''
*''Gordonia wallichii''
*''Gordonia yunnanensis''
Gordonia species from East Asia were transferred to Polyspora, including:
*''Polyspora acuminata''
*''Polyspora axillaris''
*''Polyspora chrysandra''
*''Polyspora hainanensis''
*''Polyspora kwangsiensis''
*''Polyspora longicarpa''
*''Polyspora tiantangensis''
*''Polyspora tonkinensis''

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Gordonia (plant)」の詳細全文を読む



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