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

Betula oycowiensis Besser, Prim. Fl. Galiciae Austriac. 2: 289 (1809).

This name is a synonym.

Homotypic Names:
Accepted Name:	Betula pendula subsp. pendula.
Family:	Betulaceae
Betula alba var. oycowiensis (Besser) Regel, Bull. Soc. Imp. Naturalistes Moscou 38(II): 398 (1865). Betula verrucosa subsp. oycowiensis (Besser) Nyman, Consp. Fl. Eur.: 672 (1881). Betula pendula f. oycowiensis (Besser) Dippel, Handb. Laubholzk. 2: 167 (1891). Betula pendula var. oycowiensis (Besser) C.K.Schneid., Ill. Handb. Laubholzk. 1: 112 (1904). Betula verrucosa var. oycowiensis (Besser) H.J.P.Winkl. in H.G.A.Engler (ed.), Pflanzenr., IV, 61: 77 (1904).
Original Compiler:	R.Govaerts