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''Wolffia borealis'' is a species of flowering plant known by the common name northern watermeal. It is native to North America including sections of Canada and the United States. It grows in mats on the surface of calm water bodies, such as ponds. It is a very tiny plant with no leaves, stems, or roots. The green part is up to 1.2 millimeters long with one rounded end and one pointed end. On the flattened top of the plant is a single stamen and pistil. Like other ''Wolffia'', it is edible and makes a nutritious food. ==External links== *(Jepson Manual Treatment ) *(USDA Plants Profile ) *(Washington Burke Museum ) *(Flora of North America ) 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「Wolffia borealis」の詳細全文を読む スポンサード リンク
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