Bistorta officinalis subsp. japonica




Family Polygonaceae
Subfamily Polygonoideae
Scientific name Bistorta officinalis Delarbre subsp. japonica (H. Hara) Yonekura
Synonyms Bistorta major S. F. Gray var. japonica H. Hara; Bistorta vulgaris auct., non Hill; Polygonum bistorta auct., non L.
Common name (Japanese common name) ibuki-tora-no-o (イブキトラノオ, 伊吹虎尾 [meaning: Mt. Ibuki tiger tail])
(English common name) none
Distribution (Japan) Hokkaido, Honshu, Shikoku, Kyushu
(Other nations) none (Bistorta officinalis Delarbre subsp. officinalis: northern hemisphere)
Habitat Alpine, asubalpine or mountane wet field
Chromosomal number 2n=44, 46
Description Plants electing 50-120cm tall. Leaves 8-20cm long, 2-5cm wide. Flowers white or pink inflorescence 3-8cm, long. perianths ca. 3mm long, flowering in June to September. Perrenial plants.
Reference Bistorta officinalis Delarbre
Bistorta officinalis Delarbre
Cosmetic compositions for the treatment of the hair and skin contain in the form of a powder particles resulting from the pulverization of at least one plant substance and a cohesion agent (US Patent 4569839/1986)
Agent containing an ellagic acid series compound for external application and use thereof (US Patent 5073545/1991)
Chinese herbal extracts in the treatment of HIV related disease in vitro (US Patent 5178865/1993)
Use of plant extracts for treatment of HIV, HCV and HBV infections (US Patent 5837257/1998)
Compositions of matter useful in the treatment of viral infections derived from plant extracts (US Patent 5989556/1999)
Topical composition for application to the skin containing an ellagic acid-based compound or salt thereof (US Patent 6066312/2000)
Process for preparing an anti-viral medicinal product from plant extracts (US Patent 6214350/2001)
Medicinal herbal composition for treating liver diseases and HIV (US Patent 6455078/2002)
Method for making herbal extracts using percolation (US Patent 6656437/2003)
Apparatus for making herbal extracts using percolation (US Patent 6555074/2003)
Herbal pharmaceutical composition for treatment of HIV/AIDS patients (US Patent 6696094/2004)
Pharmaceutical composition having prophylactic effects on lamivudine-related disease relapse and drug resistance and methods of using the same (US Patent 6855346/2005)
Method for making herbal extracts using percolation (US Patent 7033619/2006)
Drugs, foods and oral compositions containing stilbene-type compounds (US Patent 7163961/2007)
Note Many authors have described that Japanese species should be identified as Bistorta officinalis Delarbre subsp. officinalis (syn. Bistorta vulgaris Hill; Polygonum bistorta L.).
If the Japanese species should be identified as Bistorta officinalis subsp. japonica but not as Bistorta officinalis subsp. officinalis then legal varidity and covering scope of many patents on Polygonum bistorta (synonym of Bistorta officinalissubsp. officinalis) might be in doubt.



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



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



July 2008
at Mt. Kurumayama



April 2009
at Tsukuba Botanical Garden
April 2009
at Tsukuba Botanical Garden