| 单词 | mountain birch | 
| 释义 | > as lemmasmountain birch   mountain birch  n. a birch ( Betula species) growing in mountainous country; (North American) sweet birch,  B. lenta, or western birch,  B. occidentalis; cf. mountain mahogany n. (a). ΚΠ 1826    R. Mills Statistics S. Carolina 656  				Mountain birch... This tree must possess some medical properties; the bark has a smell resembling camphor. 1908    G. B. Sudworth Forest Trees Pacific Slope 260  				Mountain birch is a slender, graceful tree or tall shrub, long known as Betula occidentalis. 1940    W. N. Clute Amer. Plant Names 		(ed. 3)	 253  				Betula lenta. Mountain birch. 1989    Memoranda Soc. Fauna et Flora Fennica 65 70/1  				The mountain birch has two main growth forms, one monocormic and one polycormic. < as lemmas  | 
	
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