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Teak
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Teak : ウィキペディア英語版
Teak

Teak () (''Tectona grandis'') is a tropical hardwood species placed in the family Lamiaceae. ''Tectona grandis'' is a large, deciduous tree that occurs in mixed hardwood forests. It has small, fragrant white flowers and papery leaves that are often hairy on the lower surface. It is sometimes known as the "Burmese Teak ()". Teak wood has a leather-like smell when it is freshly milled. Teak timber is particularly valued for its durability and water resistance, and is used for boat building, exterior construction, veneer, furniture, carving, turnings, and other small wood projects. ''Tectona grandis'' is native to south and southeast Asia, mainly India, Sri Lanka, Indonesia, Malaysia, Thailand, Myanmar and Bangladesh but is naturalized and cultivated in many countries in Africa and the Caribbean. Myanmar's teak forests account for nearly half of the world naturally occurring teak.
"CP Teak" ("Central Province" Teak) is a description of teak from central states of India.〔(【引用サイトリンク】title=Trade and Marketing )〕 "Nagpur Teak" is another regional Indian teak.
The word teak comes from Tamil "tekku" (தேக்கு), Malayalam word ''thekku'' (തേക്കു്) via the Portuguese ''teca''.〔http://www.etymonline.com/index.php?term=teak〕 The plant is known as Thekka (තේක්ක) in Sinhala by Sri Lankan people.
== Description ==
Teak is a large, deciduous tree up to tall with gray to grayish brown branches. Leaves are ovate-elliptic to ovate, long by wide, and are held on robust petioles that are long. Leaf margins are entire.〔(''Tectona grandis'' ). ''Flora of China'' 17: 16. Accessed online: 17 December 2010.〕
Fragrant white flowers are borne on long by wide panicles from June to August. The corolla tube is 2.5–3 mm long with 2 mm wide obtuse lobes. ''Tectona grandis'' sets fruit from September to December; fruits are globose and 1.2-1.8 cm in diameter.〔 Flowers are weakly protandrous in that the anthers precede the stigma in maturity and pollen is shed within a few hours of the flower opening.〔Tangmitcharoen, S. and J. N. Owens. 1996. (Floral biology, pollination, pistil receptivity, and pollen tube growth of teak (''Tectona grandis'' Linn f.). ) ''Annals of Botany'', 79(3): 227-241. 〕 The flowers are primarily entomophilous (insect-pollinated), but can occasionally be anemophilous (wind-pollinated).〔Bryndum, K. and T. Hedegart. 1969. Pollination of teak (''Tectona grandis'' Linn.f.). ''Silv. Genet.'' 18: 77-80.〕 A 1996 study found that in its native range in Thailand, the major pollinator were species in the ''Ceratina'' genus of bees.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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