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(First upload on November 3 2015. Last on January 13 2021) [ 日本語 | English ]

Mentha L. (ハッカ, mint) M. canadensis L. Hakka (ハッカ, 薄荷, s.l.), American wild mint Lifeform: perennial forb Habitat: on mosit soil, escaped from crop fields Chromosome number: 2n = 96 Use: oil, menthol as herbal medicine (many cultivars) Synonyms: Mentha haplocalyx Briq. var. nipponensis Mentha haplocalyx Briq. Mentha sachalinensis (Briq.) Kudo

Mentha arvensis L. var. piperascens Malinv. ex Holmes Mentha arvensis L. var. formosana Kitam. Mentha arvensis L. ssp. piperascens (Malinv. ex Holmes) H. Hara Mentha haplocalyx Briq. var. piperascens (Malinv. ex Holmes) C. Y. Wu et H. W. Li var. piperascens (Malinv. ex Holmes) H. Hara Hakka (ハッカ, 薄荷, s.s.), or Nihon-hakka (ニホンハッカ, 日本薄荷), Japanese peppermint Distribution: China - Korea - Japan, including Hokkaido Synonyms:

Mentha canadensis in Hokkaido

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var. piperascens

1 2 3
4 5 6
[1-3] along a road to go the Toya Lake Experimental Station of Hokkaido University faced to Toya Lake on September 15 2015. [4-6] in Shibetsu wetland, eastern Hokkaido, on Augsut 28 2020. Records: in Experimental Station for Medical Plant Studies, Faculty of Medicine, Hokkaido University, on November 16 2020.