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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 Hudsonia tomentosa ： ウィキペディア英語版 Hudsonia tomentosa ''Hudsonia tomentosa'' is a species of flowering plant in the rockrose family known by the common names woolly beachheather, beach heather, and sand heather. It is native to northeastern North America, including central and eastern Canada and the northeastern United States.〔(''Hudsonia tomentosa''. ) NatureServe.〕〔(''Hudsonia tomentosa''. ) USDA Plants Profile.〕 This species is a small shrub growing up to about 8 inches tall. The leaves are tiny, scale-like, and coated in woolly hairs. The yellow flowers have five petals and measure about a quarter inch wide. The plant flowers from May to July.〔(''Hudsonia tomentosa''. ) USDA NRCS Plant Fact Sheet.〕 This shrub grows in sandy habitat such as pine barrens and dunes. It may be a coastal species, but since it is less tolerant of sea spray than other coastal plants, it is generally found on arid backdunes and not at the water's edge. The plant is associated with green sands colonized with nitrogen fixing blue-green algae, particularly in Alberta.〔 These algae may give nutrients to the shrub, allowing it to grow in nutrient-poor sand soils.〔Nelson, S. D., et al. (1986). (Nitrogen fixation in relation to ''Hudsonia tomentosa'': a pioneer species in sand dunes, northeastern Alberta. ) ''Canadian Journal of Botany'' 64(11): 2495-2501.〕 This plant "requires periodic disturbance," however, it is "very sensitive to human impacts," such as trampling.〔 It has narrow habitat requirements but it can be locally abundant.〔 ==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「Hudsonia tomentosa」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.