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''Sequoia'' is a genus of redwood coniferous trees in the subfamily Sequoioideae of the family Cupressaceae. The only extant species of the genus is ''Sequoia sempervirens'' in the Northern California coastal forests ecoregion of Northern California and Southwestern Oregon in the United States.〔(Kew World Checklist of Selected Plant Families )〕〔(Biota of North America Program 2013 county distribution map )〕 The two other genera, ''Sequoiadendron'' and ''Metasequoia'', in the subfamily Sequoioideae are closely related to ''Sequoia''. It includes the largest trees in the world. Several extinct species have been named from fossils, including ''Sequoia affinis'', ''Sequoia chinensis'' of China, ''Sequoia langsdorfii'', ''Sequoia dakotensis'' of South Dakota (Maastrichtian), and ''Sequoia magnifica''. ==Etymology== The name ''Sequoia'' was first published as a genus name by the Austrian botanist Stephan Endlicher in 1847. However, he left no specific reasons for choosing that name, and there is no record of anyone else speaking to him about its origin. The most common modern guess is that Endlicher, a published linguist as well as a botanist, named the genus in honor of Sequoyah, the inventor of the first Cherokee writing system. As far back as the 1860s, it has also been suggested that the name is instead an alteration of the Latin word for "sequence", since the species is known to be a follower or remnant of massive ancient, extinct species, and thus the next in a sequence.〔 However, in an 2012 article, author Gary Lowe argues that Endlicher would not have had the knowledge to conceive of ''Sequoia sempervirens'' as the successor to a fossil sequence, and that he more likely saw it as completing a morphological sequence of species in regards to seeds per cone scale. 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「Sequoia (genus)」の詳細全文を読む スポンサード リンク
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