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(First upload on August 1 2010. Last on August 12 2023) [ 日本語 | English ]

Engler's syllabus (エングラー体系)

Saururaceae Martynov

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Nomenclature: Ohwi and Kitagawa (1983) Two genera in Saururaceae are recorded from Japan Saururus L. (ハンゲショウ) S. chinensis (Lour.) Ball. (ハンゲショウ): not in Hokkaido Houttuynia Thunb. (ドクダミ) H. cordata Thunb. (Dokudami, ドクダミ, 毒溜), lizard tail, or Korean houttuynia Lifeform: deciduous perennial forb Distribution: east Asia, incluidng Japan

Habitat: semi-mesic sites Medical use: aboveground used for diuretic, laxative and detoxification Crude drug name: Houttuyniae herba Ingredient: decanoylacetaldehyde, etc. f. plena (Makino) Okuyama (ヤエドクダミ) f. variegata (Makino) Sugim., n. n. (フイリドクダミ) f. viridis J. Ohara (ミドリドクダミ)

Houttuynia cordata in Japan

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[1] in Oi Pier Seaside Park, Tokyo, on June 3 2016. [2/3] clonal growth observed at Toya Lake Experimental Station, Hokkaido University, on July 22 2010. [4] at Yushima Temple (seido), Tokyo, on May 30 2014. [5] at a bank along Sophia Street, Chiyoda Ward, Tokyo, on May 26 2017. [6] along a paved road in N26E2, East Ward, Sapporo, on June 12 2021. [7] at Kanda Bridge Park, Tokyo, on June 6 2023.

f. plena (ヤエドクダミ)

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[1-3] in the experimental station of medicinal plant studies, Hokkaido University, on July 18 2019.