| 单词 | poplar birch | 
| 释义 | > as lemmaspoplar birch   poplar birch  n. the grey birch,  Betula populifolia, a slender ornamental tree found in northeastern North America. ΚΠ 1818    A. Eaton Man. Bot. 		(ed. 2)	  ii. 172  				Betula..populifolia..white birch..poplar birch..30 to 40 feet high. 1874    Amer. Naturalist 8 193  				When Penikese was first known it was covered with a growth of trees... Among these may be mentioned the red cedar, pitch pine..poplar birch, hornbeam [etc.]. 1998    Jrnl. Biogeography 25 1040 		(table)	  				Poplar-birch and pine forests of western Siberia. < as lemmas | 
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