Hamamelis japonica




Family Hamamelidaceae
Scientific name Hamamelis japonica Siebold et Zuccarini
Synonyms Hamamelis bitchuensis Makino; Hamamelis japonica Siebold et Zuccarini var. glauca
Common name (Japanese common name) mansaku
(English common name) none
Distribution (Japan) Honshu (mainly Pacific side), Shikoku, Kyushu
(Other nations) none
Chromosomal number 2n=24
Description Plants 5-6m tall. Leaves 5-11cm long, 3-7cm wide. Flowers 4 yellow petals each 1-1.5cm long, flowering in February to March. Deciduous. Subarbor trees.
Reference Hamamelis japonica Siebold & Zucc.
Herbicidal compositions and herbicidal processes (US Patent 4309208/1982)
Detergent composition containing a quaternary ammonium cationic surfactant and a carboxylate anionic surfactant (US Patent 4919846/1990)
Agents acting against hyperreactive and hypoactive, deficient skin conditions and manifest dermatitides (US Patent 5952373/1999)
Cosmetic composition (US Patent 6063366/2000)
Bioflavonol-glycoside peresters and their incorporation into pharmacologically active concentrates and ultramicroemulsions (US Patent 6180661/2001)
Self-indicating cosmetic composition (US Patent 6309655/2001)
Agents acting against hyperreactive and hypoactive, deficient skin conditions and manifest dermatitides (US Patent 6180662/2001)
Cultured plant cell gums for food, pharmaceutical, cosmetic and industrial applications (US Patent 6350594/2002)
Cosmetic and dermatological preparations with flavonoids (US Patent 6423747/2002)
Cosmetics (US Patent 6497889/2002)
Natural substances based agent (US Patent 6605296/2003)
Cosmetic composition comprising a phosphoric triester and a skin activating component (US Patent 6932975/2005)
Cystine derivative and agent for suppressing activation of inflammatory factors (US Patent 6914075/2005)
Hair cosmetic composition (US Patent 20070166256)
Hydroxycitric acid derivatives and skin external preparations using the same (US Patent 20070293577)



February 2008
at Ushiku Forest Park
February 2007
at Tsukuba Botanical Garden
February 2008
at Ushiku Forest Park



March 2008
at Takasaki Forest Park
March 2008
at Koishikawa Botanical Garden
March 2008
at Koishikawa Botanical Garden



January 2008
at Tsukuba Botanical Garden



May 2008
at Tsukuba Botanical Garden
May 2008
at Tsukuba Botanical Garden
May 2008
at Tsukuba Botanical Garden