| betula | European white birch, bark and leaves of Betula alba (family Betulaceae); native to Europe, northern Asia, and North America, north of Pennsylvania. It contains betulin (betula camphor), betuloresinic acid, volatile oil, saponins, betulol (sesquiterpine alcohol), apigenin, dimethyl ether, betuloside, gaultherin, methyl salicylate, and ascorbic acid; has odour of wintergreen and is used as a pharmaceutic aid (flavor/aromatic). (05 Mar 2000) |
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| betula oil | Oil of sweet birch, a volatile oil obtained by distillation from the bark of Betula lenta (sweet birch); used as a flavoring agent and as a counterirritant liniment. See: methyl salicylate. (05 Mar 2000) |