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(First upload on December 27 2008. Last on December 26 2025) [ 日本語 | English ]

Nymphaea L. (スイレン) Suiren (スイレン, 睡蓮), water lily Lifeform: perennial forb Habitat: halophyte (ponds, lakes, shallow streams, etc.) HUSTEP: Plants and Plant communities in Japan (flora list) A lot of cultivars (varieties) Classification based on gardening Temperate Nymphaea: cold-tolerant Tropical Nymphaea

Parents of hybrids (more species) N. alba L. (European white water lily): Europe - north Africa N. caerulea Sav. (Egyptian blue water lily): north Africa N. capensis Thunb. (cape blue water lily ): south Africa N. gigantea Hook. (Australian water lily): Australia N. lotus L. (Egyptian white water lily): north Africa N. mexicana Zucc. (yellow water lily): central America N. nouchali Burn fil.: India N. odorata Ait. (fragrant water lily): central/north America N. stellata Willd. (blue star water lily): southeast Asia

Nymphaea cv. in Hokkaido

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[1] Nymphaea sp. (clutivar) in the artificial pond (nicknamed Ono Pond, 大野池) near the Faculty of Engineer in the campus of Hokkaido University on July 20 2017. [2] near Kabuto Swamp, northern Hokkaido, in Sarobetsu on October 13 2010. [3/4] at a dry-stone wall in Goryokaku Park, Hakodate, on July 27 2012. [5] in Ono Pond on May 11 2019.

Nymphaea alba in Japan

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Seiyousuiren (セイヨウスイレン, 西洋睡蓮), European (white) water lily Distribution: originally in Europe, northern Africa and eastern and central Asia invasive to China, New Zealand, southern America, etc.

Habitat: water, such as ponds, lakes, slow-moving streams and marshes (recorded at depths of up to 5 m) Flower: white (- pale pink) 10-20 cm φ, 20-25 petals

Synonyms: Castalia alba Greene Leuconymphaea alba (L.) Kuntze ssp. alba ssp. occidentalis (Ostenf.) Hyl., smaller flowers

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[1-3] in Jindai Botanical Gardens, Chofu, central Japan, on July 30 2025.