Nymphaea tetragona




Family Nymphaeaeceae
Scientific name Nymphaea tetragona Georgi
Synonyms Castalia crassifolia Handel-Mazzetti; Castalia pygmaea Salisbury; Castalia tetragona (Georgi) G. Lawson; Leuconymphaea tetragona (Georgi) Kuntze; Nymphaea acutilboa de Candolle; Nymphaea alba L. subsp. tetragon (Georgi) Korsh; Nymphaea crassifolia (Handel-Mazzetti) Nakai; Nymphaea fennica Mela; Nymphaea jponokoreana Nakai; Nymphaea pygmaea (Salisbury) Aiton; Nymphaea tetragona Georgi subvar. indica Caspary; Nymphaea tetragona Georgi var. angusta Caspary ex Nakai; Nymphaea tetragona Georgi var. crassifolia (Handel-Mazzetti) Y. C. Chu; Nymphaea tetragona Georgi var. himalayense F. Henkel et al.; Nymphaea tetragona Georgi var. indica (Caspary) F. Henkel et al.; Nymphaea tetragona Georgi var. lata Caspary; Nymphaea tetragona Georgi var. wenzelii (Maack) F. Henkel et al.; Nymphaea wenzelii Maack
Common name (Japanese common name) hituji-gusa (ヒツジグサ, 羊草 [meaning: sheep weed])
(English common name) pygmy waterlily
Distribution (Japan) Hokkaido, Honshu, Shikoku, Kyushu, Okinawa
(Other nations) Russia, Korea, China, Taiwan, Mongolia, Vietnam, Myanmar, India, Kazakhstan, Finland, Canada, USA
Habitat Pond, swamp
Chromosomal number 2n=112
Description Leaves 10-19cm long. Flowers white petals each 8-15cm long, flowering in June to September. Water plants. Perennial plants.
Reference Nymphaea tetragona Georgi
Nymphaea tetragona Georgi
Water purificant (US Patent 6254800/2001)
Water purificant methods (US Patent 6478985/2002)
Note Rare species.



July 2008
at Tsukuba Botanical Garden
June 2008
at Kochi Prefecture
Makino Botanical Garden
June 2008
at Kochi Prefecture
Makino Botanical Garden