World Checklist of Selected Plant Families: Royal Botanic Gardens, Kew

Betula verrucosa var. oycowiensis (Besser) H.J.P.Winkl. in H.G.A.Engler (ed.), Pflanzenr., IV, 61: 77 (1904).
Original Compiler:	R.Govaerts
This name is not Accepted by:	Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne. [as Betula pendula var. oycowiensis] Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew. [as Betula pendula var. oycowiensis]

Betula verrucosa var. oycowiensis (Besser) H.J.P.Winkl. in H.G.A.Engler (ed.), Pflanzenr., IV, 61: 77 (1904).

Original Compiler:

R.Govaerts

This name is not Accepted by:

Govaerts, R. (1996). World Checklist of Seed Plants 2(1, 2): 1-492. MIM, Deurne. [as Betula pendula var. oycowiensis]

Govaerts, R. (2003). World Checklist of Selected Plant Families Database in ACCESS: 1-216203. The Board of Trustees of the Royal Botanic Gardens, Kew. [as Betula pendula var. oycowiensis]