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(Upload on October 22 2018) [ 日本語 | English ]

Mentha L. (ハッカ) Midorihakka (ミドリハッカ, 緑薄荷), spearmint Lifeform: perennial forb, with 30-60 cm in height Distribution: native to Europe (exotic to Japan) Habitat: sunny and mesic grasslands Chromosome number: 2n = 24 Synonyms: Mentha viridis (L.) L.

var. crispa Benth. (オランダハッカ, s.s.) or cv. crispa Orandahakka (オランダハッカ, 阿蘭陀薄荷, s.s.) Distribuiton: introduced to Japan in Edo Era Hybrids: occuring frequently (sometimes difficulties in the identification) Synonyms: Mentha viridis (L.) L. var. crispa Benth. Mentha crispata Schrad. ex Willd.

Mentha spicata in Hokkaido

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var. crispa (cv. crispa)

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[1-3] in a wet wasteland on N25/W3, North Ward, Sapporo, on August 31 2018.