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71 birch family species
Betula papyrifera
Betula alleghaniensis
Corylus cornuta
Ostrya virginiana
Alnus rubra
Carpinus caroliniana
Alnus incana
Alnus alnobetula
Betula populifolia
Corylus americana
Betula pumila
Betula lenta
Betula occidentalis
Betula glandulosa
Alnus glutinosa
Betula nigra
Betula pendula
Betula cordifolia
Corylus avellana
Betula neoalaskana
Alnus serrulata
Betula michauxii
Betula nana
Alnus rhombifolia
Corylus colurna
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