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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 Echinocereus viridiflorus ： ウィキペディア英語版 Echinocereus viridiflorus ''Echinocereus viridiflorus'' is a species of cactus known by the common names nylon hedgehog cactus, green pitaya, and small-flowered hedgehog cactus. It is native to the central and south-central United States and northern Mexico, where it can be found in varied habitat types, including desert scrub, woodlands, dry grasslands, and short-grass prairie.〔(''Echinocereus viridiflorus''. ) Flora of North America.〕 This cactus has a small spherical or cylindrical stem 3 centimeters to over 30 centimeters tall and up to 9 centimeters wide. It is mostly unbranched but it may occur in squat clusters of several branches. The body of the plant is ridged and lined with many areoles bearing spines. The spines may be red, yellow, white, purplish, or bicolored, sometimes with darker tips. The flower is up to 3 centimeters long and has tepals in shades of yellowish, brownish, greenish, or occasionally red, with darker reddish midstripes. The tepals are thin at the tips.〔 The taxonomy of the species is uncertain, with authors recognizing several varieties which are sometimes treated as separate species. One variety, var. ''davisii'' (sometimes called ''Echinocereus davisii''), Davis' green pitaya, is federally listed as an endangered species. This taxon is very small, reaching no more than 3 centimeters tall. It becomes smaller when water is scarce, withdrawing under the ground, sometimes leaving just some spines sticking out.〔(''Echinocereus davisii''. ) Flora of North America〕〔(var. ''davisii''. ) Center for Plant Conservation.〕 It has yellow-green flowers. This rare variety is endemic to Brewster County, Texas, where it grows in beds of ''Selaginella'' in rocky soils of novaculite origin.〔USFWS. (var. ''davisii'' Recovery Plan. ) September 1984.〕 There was only one population known as of 1984, and it probably will not expand its range because it is limited to a specific mineral substrate.〔 ==References== 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「Echinocereus viridiflorus」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.