Betula recurvata (I.V.Vassil.) V.N.Vassil.Spisok Rast. Gerb. Fl. S.S.S.R. Bot. Inst. Vsesoyuzn. Akad. NaukStatus:Synonym of Betula litwinowii
Doluch.
Rank:Species Family: Betulaceae
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Betula-alnus maritima MarshallArbust. Amer.Status:Synonym of Alnus maritima
(Marshall) Muhl. ex Nutt.
Rank:Species Family: Betulaceae
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