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(First upload on December 30 2008. Last on July 8 2020) [ 日本語 | English ]

Nymphaea L. (スイレン) Hitsujigusa (ヒツジグサ, 未草), pygmy waterlily Lifeform: floating, perennial forb Distribution: Europe - northern India - Siberia - east Asia Habitat: halophyte (ponds, lakes, shallow streams, etc.) ⇒ wetland (湿原), wetland research (湿原研究) HUSTEP: Plants and Plant communities in Japan (flora list) → Field trip: Nature on lakes, volcanoes, sea and forests (海と湖と火山と森林の自然 ) Chromosome number: 2n = 112

Synonyms: Nymphaea tetragona Georgi var. angusta Casp. (s.s.) Nymphaea tetragona Georgi var. crassifolia (Hand.-Mazz.) Y. C. Chu Nymphaea tetragona Georgi var. minima (Nakai) W. T. Lee Nymphaea pygmaea (Salisb.) W. T. Aiton var. angusta Casp. (ヒツジグサ, s.s.), leaf split deeply var. tetragona (エゾノヒツジグサ), leaf split shallowly var. erythrostigmatica Ko. Ito (エゾベニヒツジグサ), RDB = Vu

Nymphaea tetragona in Hokkaido

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var. tetragona

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4 5
[1] in Otarumappu Pond near Tomakomai City, Hokkaido, Japan, in the summer of 1987 (or 1986). [2] at a pond along a tiny trail for looking around small islands in O-numa Park, southern Hokkaido, on July 7 2013. [3] in Shizukari wetland, southern Hokkaido, on June 15 2015. [4] in Shizukari wetland, southern Hokkaido, on July 7 2017. [5] in a pond developed on Atsuma Coast (浜厚真), central Hokkaido, on June 16 2020.