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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Pinus hartwegii ： ウィキペディア英語版 Pinus hartwegii ''Pinus hartwegii'' (syn. ''P. rudis'', ''P. donnell-smithii''), Hartweg's pine, is a pine native to the mountains of Mexico and Central America east to Honduras. It is named after Karl Theodor Hartweg, who discovered it in 1838. ==Distribution== ''Pinus hartwegii'' is a very high altitude species, growing at altitudes of . It forms the alpine tree line on most of Mexico's higher mountains. It grows on both the Sierra Madre Occidental and Sierra Madre Oriental (mountain ranges) (29° North latitude) from Chihuahua State and Nuevo León (26°) to the highest peaks in the mountain ranges on the El Salvador—Honduras border (15° North latitude). In the Sierra Madre Occidental this pine grows with very dry winters and a very heavy rainy season in summer, with constant frosts from October to March. This pine does not acquire the dwarfed and contorted shape shared by many species at high altitudes. Even at the alpine tree line, this tree is not damaged by the cold and wind-blown ice present at that altitude. Consequently, ''Pinus hartwegii'' has been studied as an evolutionarily unique member on tree line ecophysiology. 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「Pinus hartwegii」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.