Taxonomy: Fam. Lamiaceae// Genus: Mentha// Species: Mentha longifolia (L.) L.
Determined according to the botanical keys provided in Flora Europaea (Tutin et al., 1972) and Janković in Josifović (1974) as Mentha longifolia (L.) Hudson, FI. Angl. 221 (1762). The accepted name in The Euro+Med PlantBase (source: World Checklist of Selected Plant Families, 2010) is Mentha longifolia (L.) L., Fl. Monsp.: 19. 1756.
Distribution: Native to Macaronesia; Temperate Eurasia – Europe to West Siberia, South-Central China, West Himalaya, Pakistan and Arabian Peninsula; Africa-North Africa to Chad and East Africa; South Africa according to the distribution information provided by the Plants of the World Online portal (Royal Botanic Gardens, Kew).
Habitat: Streams, banks of rivers and water channels, grasslands.
Lifeform: Perennial, hemicryptophyte according to the Raunkiaer system.
Flowering period: Summer – fall: JUL, AUG, SEP.
References:
Mentha L. Harley, R. M. in Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. & Webb, D.A. (1972). Flora Europaea. Volume 3: Diapensiaceae to Myoporaceae. Cambridge: Cambridge University Press, pp. 183-186.