Nuphar japonica




Family Nymphaeaeceae
Scientific name Nuphar japonica de Candolle
Synonyms Nuphar japonica de Candolle var. crenata Caspary; Nuphar japonica de Candolle forma rubrotinctum (Caspary) Kitamura; Nymphaea japonica (de Candolle) G. Lawson; Nuphar japonicum de Candolle; Nymphaea japonica Lawson; Nymphozanthus japonicus (de Candolle) Fernald
Common name (Japanese common name) koh-hone (コウホネ, 河骨 [meaning: white bone])
(English common name) yellow water lily
Distribution (Japan) Hokkaido (Southwestern region), Honshu, Shikoku, Kyushu
(Other nations) Korea
Habitat Pond, swamp
Chromosomal number 2n=34
Description Leaves 20-30cm long. Flowers yellow or red (N. japonica forma rubrotinctum) 4-5cm, flowering in June to September. Water plants. Perennial plants.
Reference Nuphar japonica DC.
Morphological Variation and Classification of Nuphar with Special Reference to Populations in Central to Western Japan
Hair cosmetic composition (US Patent 5053222/1989)
Detergent composition containing a quaternary ammonium cationic surfactant and a carboxylate anionic surfactant (US Patent 4919846/1990)
Water purificant (US Patent 6254800/2001)
Antidiabetic external skin application composition (US Patent 6174543/2001)
Method and system for managing water system habitat environment (US Patent 6387265/2002)
Water purificant methods (US Patent 6478985/2002)
Hair treatment composition and hair cosmetic for damaged hair (US Patent 20060165636)
Cosmetic composition and production thereof (US Patent 20060018867)
Note Nuphar subintegerrima (Caspary) Makino (syn. Nuphar japonica de Candolle var. subintegerrima Caspary) is not a synonym of Nuphar japonica de Candolle.



May 2008
at Kochi Prefecture
Makino Botanical Garden
May 2008
at Tsukuba Botanical Garden
May 2008
at Tsukuba Botanical Garden



September 2007
at Tsukuba Botanical Garden
May 2008
at Tsukuba Botanical Garden
July 2008
at the Imperial Palace