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(First upload on August 15 2011. Last on January 7 2025) [ 日本語 | English ]

Actinidiaceae Hutch. (マタタビ) Clematoclethra Maxim. Saurauia (タカサゴシラタマ) Willd. 300 species in central and southern America Actinidia Lindl. (マタタビ) In Japan

	A. arguta (Siebold et Zucc.) Planch. ex Miq. (コクワ)	A. polygama (Siebold et Zucc.) Planch. ex Maxim. (マタタビ)	A. kolomikta (Maxim. et Rupr.) Maxim. (ミヤママタタビ)
leaf	thick	thin	thin
surface	backside, hair on the veins	hairless	hair on the veins
varigation	none	white-variegated	white → pink-variegated
base	orbicular	orbicular - shallow cordate	cordate
lateral vein		5-6 pairs	8-10 pairs
flower	φ = 15-20 mm	φ = 25-30 mm	φ = 15-20 mm
stamen	dark blue	yellow	yellow
pith	empty	whitish, non-empty	empty

A. rufa (Siebold et Zucc.) Planch. ex Miq. (シマサルナシ), Korea - Japan (south to Kii Peninsula) - Taiwan

Actinidia polygama in Japan

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Matatabi (マタタビ, 木天蓼), silvervine Natsu-ume (ナツウメ, 夏梅) Lifeform : woody vine Distribution: east Asia (Korea - Japan - Kuril) Habitat: forest edge Field training on integrated environmental research (統合環境調査法実習) (fauna and flora 種リスト)

Edible: fruit Chemical substances: nepetalactol (mosquito repellent) and others cats react strongly to nepetalactol, probably for avoiding mosquitos ☛ Etymology: Matatamubu (マタタムブ), Aynu 918? ｢本草和名｣ 多々比(ワタタヒ) 927 ｢延喜式｣ 和太太備(ワタタビ) 1699 貝原益軒「日本釈名」 (マタツミ)

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[1/2] at Usu-Zenkoji Temple, Date City, on July 22 2011. [3] at Toya Lake Experimental Station of Hokkaido University on September 18 2013. [4] in Oi Pier Seaside Park, Tokyo, on June 3 2016. [5/6] along a forest road in the Shibecha Experimental Forest of Kyoto University, eastern Hokkaido, on June 25 2019. [7] on the middle slope of Mount Mashu, eastern Hokkaido, on June 26 2019. [8/9] along a trail on Mount Kuromatsunai, southern Hokkaido, on June 12 2024.