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Mentha aquatica
|synonyms_ref = 〔(【引用サイトリンク】title=The Plant List: A Working List of All Plant Species )〕
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''Mentha aquatica'' (water mint; syn. ''Mentha hirsuta'' Huds.〔Euro+Med Plantbase Project: (''Mentha aquatica'' )〕) is a perennial plant in the genus ''Mentha'', that grows in damp places and is native to much of Europe, northwest Africa and southwest Asia.〔〔Flora of NW Europe: (''Mentha aquatica'' )〕
== Description ==
Water mint is a herbaceous rhizomatous perennial plant growing to tall. The stems are square in cross section, green or purple, and variably hairy to almost hairless. The rhizomes are wide-spreading, fleshy, and bear fibrous roots. The leaves are ovate to ovate-lanceolate, long and broad, green (sometimes purplish), opposite, toothed, and vary from hairy to nearly hairless. The flowers of the watermint are tiny, densely crowded, purple, tubular, pinkish to lilac in colour and form a terminal hemispherical inflorescence; flowering is from mid to late summer. Water mint is visited by many types of insects, and can be characterized by a generalized pollination syndrome, but can also spread by underground rhizomes. All parts of the plant have a distinctly minty smell.〔〔Blamey, M. & Grey-Wilson, C. (1989). ''Flora of Britain and Northern Europe''. ISBN 0-340-40170-2〕〔Huxley, A., ed. (1992). ''New RHS Dictionary of Gardening''. Macmillan ISBN 0-333-47494-5.〕 A variety known as ''Mentha aquatica var. litoralis'' is native to areas of Sweden and Finland near the Baltic Sea. It is unbranched, hairless, with narrower leaves and paler flowers.〔(【引用サイトリンク】title=Water mint: ''Mentha aquatica'' )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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