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World Checklist of Selected Plant Families (WCSP)

Betula alba subsp. tortuosa (Ledeb.) Regel, Bull. Soc. Imp. Naturalistes Moscou 38(II): 404 (1865).

Original Compiler: R.Govaerts
This name is not Accepted by:

Govaerts, R.H.A. (2011). World checklist of selected plant families published update. Facilitated by the Trustees of the Royal Botanic Gardens, Kew. [as Betula pubescens var. pumila]