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''Hierochloe odorata'' or ''Anthoxanthum nitens'',〔 also known as Sweet grass, Holy grass (UK), Manna grass, Mary’s grass, Peace grass, Unity grass or Vanilla grass, is an aromatic herb native to northern Eurasia and North America. In Poland it is known as bison grass. It is used in herbal medicine and in the production of distilled beverages (e.g., Żubrówka, Wisent). It owes its distinctive sweet scent to the presence of coumarin. This variety of buffalo is different from the species of grass commonly known as 'buffalo' (''Stenotaphrum secundatum'') in Australia. ==Characteristics== ''Hierochloe odorata'' is a very hardy perennial, able to grow to the Arctic Circle. Its leaves do not have rigid stems, so only grow to about in height, and then the leaves grow outward horizontally to long or more, by late summer. The base of the leaf, just below the soil surface, is broad and white, without hairs; the underside of the leaf is shiny, without hairs. In the wild, the bases of the leaves are frequently purple-red colored, and this indicates a phosphorus-deficient soil.〔Sweetgrass Growing information. Redwood City Seed Company. http://www.ecoseeds.com/sweetgrass.html〕 There are several strains of sweetgrass — a regular strain that can be harvested once or twice a year, and a naturally occurring polyploid strain, which is much faster growing and can be harvested three to five times a year.〔 Two chemicals found in sweetgrass, phytol and coumarin, repel mosquitoes.〔http://phys.org/news/2015-08-mosquito-repelling-chemicals-traditional-sweetgrass.html〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hierochloe odorata」の詳細全文を読む スポンサード リンク
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