Betula pendula Roth
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Authority
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
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Family
Betulaceae
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Scientific Name
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Description
Species Description - Occasionally escapes from cult. and would key to B. populifolia. It has drooping twigs; middle-sized trunks are beset with vertical, diamond-shaped, rough black marks that eventually coalesce.