| Mentha aquatica | 
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| Plant in flower | 
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| Scientific classification | 
| Kingdom: | Plantae | 
 
| Clade: | Tracheophytes | 
 
| Clade: | Angiosperms | 
 
| Clade: | Eudicots | 
 
| Clade: | Asterids | 
 
| Order: | Lamiales | 
 
| Family: | Lamiaceae | 
 
| Genus: | Mentha | 
| Species: | M. aquatica | 
| Binomial name | 
| Mentha aquatica 
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| Synonyms | 
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Marrubium aquaticum (L.) UspenskyMentha acuta OpizMentha acutata OpizMentha affinis Boreau nom. illeg.Mentha aromatica Opiz ex Déségl.Mentha augusta Opiz ex Déségl.Mentha auneticensis OpizMentha aurita Weihe ex Fresen.Mentha avellinii Tod. ex Bertol.Mentha avellinii Tod. ex Lojac.Mentha brachiata Weihe ex Fresen.Mentha bugulifolia Weihe ex Fresen.Mentha calaminthifolia (Vis.) Heinr.BraunMentha capitata OpizMentha cetica Heinr.BraunMentha chaixii StrailMentha cordata Jan ex NymanMentha crenatodentata StrailMentha denticulata StrailMentha deseglisei Malinv. nom. illeg.Mentha dubia Chaix ex Vill.Mentha dunensis StrailMentha duriuscula Heinr.Braun & TopitzMentha duriuscula (Heinr.Braun & Topitz) Trautm.Mentha elongata (Pérard) Heinr.BraunMentha eriantha K.KochMentha glabra Colla nom. illeg.Mentha glomerata StokesMentha grandidentata StrailMentha hirsuta Huds.Mentha hirta Caldas nom. illeg.Mentha hybrida Aresch.Mentha hygrophila TopitzMentha hystrix Heinr.BraunMentha incisoserrata StrailMentha intermedia Host nom. illeg.Mentha × intricata DebeauxMentha lateovata StrailMentha latifolia Nolte ex Hornem. nom. illeg.Mentha limicola StrailMentha limnetes (Topitz) Trautm.Mentha limosa (Schur) Heinr.BraunMentha littoralis StrailMentha lloydii BoreauMentha lobeliana (Becker) Heinr.BraunMentha macrocephala StrailMentha macrophylla Waisb. ex Trautm. nom. illeg.Mentha microcephala StrailMentha nederheimensis StrailMentha nepetifolia Lej.Mentha nigrescens Weihe ex Fresen.Mentha obliqua Raf.Mentha obtuseserrata Opiz ex Malinv.Mentha obtusifolia Opiz ex Déségl.Mentha origanoides Ten.Mentha origanoides Lej. ex Fingerh. nom. illeg.Mentha ortmanniana OpizMentha paludosa SoleMentha palustris Mill.Mentha pedunculata (Pers.) Poir.Mentha pireana StrailMentha polyanthetica (Topitz) Trautm.Mentha probabilis SchurMentha purpurea HostMentha pyrifolia Heinr.BraunMentha pyrifolia A.Kern. nom. illeg.Mentha ramosissima StrailMentha ranina OpizMentha rauscheri TopitzMentha riparia Schreb.Mentha riparia Lej. ex Malinv. nom. illeg.Mentha rudaeana OpizMentha sativa Sm. nom. illeg.Mentha soleana StrailMentha stagnalis TopitzMentha stagnalis (Topitz) Trautm.Mentha stolonifera OpizMentha subspicata Weihe ex Fresen.Mentha subthermalis Trautm.Mentha tinantiana Lej. ex Malinv.Mentha trojana Heinr.BraunMentha umbrosa OpizMentha urticifolia Ten.Mentha viennensis OpizMentha weiheana OpizMentha weissenburgensis F.W.Schultz ex Nyman nom. inval.
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Mentha aquatica (water mint; syn. Mentha hirsuta Huds.) is a perennial flowering plant in the mint family, Lamiaceae.  It grows in moist places and is native to much of Europe, northwest Africa and southwest Asia.