Ulmus laevis var. celtidea

Ulmus laevis var. celtidea Rogow. [: like Celtis, the leaves] is a putative variety of European White Elm first described by Rogowicz, who found the tree in 1856 along the river Dnjepr near Chernihiv in what is now northern Ukraine. The type specimen is held at the National Herbarium of Ukraine. The variety was first named as Ulmus pedunculata var. celtidea. Litvinov (1908) considered it a species, calling it Ulmus celtidea Litv., a view not upheld by other authorities.

Similar trees were later found near Briansk in Oryol Oblast, but featured larger leaves.