World Checklist of Selected Plant Families (WCSP)

Alnus × ambigua Beck, Verh. K. K. Zool.-Bot. Ges. Wien 38: 767 (1888).

This name is a synonym.

Accepted Name:	Alnus × pubescens Tausch, Flora 17: 520 (1834).
Family:	Betulaceae
Original Compiler:	R.Govaerts