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''Polygonum fowleri'', called (in English) Fowler's knotweed or Hudsonian knotweed or (in French) Renouée de Fowler or Renouée de la baie d'Hudson, is a plant species native to the seashores of the northern part of North America. It has been reported from every Canadian province and territory except Alberta and Saskatchewan, as well as from Maine, Alaska, Washington, Oregon, California, and St. Pierre & Miquelon. It is usually found in gravelly locations along the seacoast.〔(Flora of North America ''Polygonum fowleri'' B. L. Robinson, 1902. )〕〔(Biota of North America Program 2014 state-level distribution map )〕 ''Polygonum fowleri'' is a prostrate to ascending herb, often with zigzagged stems. Inflorescences are in the axils of the leaves, each with up to 10 white or pink flowers.〔〔(Robinson, Benjamin Lincoln. 1902. Rhodora 4(40): 67. )〕 ;Subspecies Two subspecies are recognized, treated by some botanists as distinct species:〔 *''Polygonum fowleri'' subsp. ''fowleri'' - shores of Atlantic, Pacific, and Arctic Oceans *''Polygonum fowleri'' subsp. ''hudsonianum'' (S. J. Wolf & McNeill) Costea & Tardif (= ''P. hudsonianum'' (S. J. Wolf & McNeill) H. R. Hinds) - shores of Hudson Bay, the Canadian Arctic Islands, and the Atlantic coast of Labrador, Newfoundland, and Nova Scotia ==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「Polygonum fowleri」の詳細全文を読む スポンサード リンク
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