Ulmus bergmanniana

Ulmus bergmanniana C.K.Schneid.,[1] commonly known as Bergmann's elm, is a deciduous tree found across much of China in forests at elevations of 1500–3000 m.[2] The tree is very closely related to the wych elm Ulmus glabra;[3] it can reach a height of 26 metres (85 ft) with a wide-spreading crown, and a trunk of about 0.9 m d.b.h.

[5] The pubescent leaves range from obovate to elliptic, less than 16 cm (6.3 in) long, and bluish-green when mature.

U. bergmanniana has a moderate resistance to Dutch elm disease; in trials [12] in Oklahoma it was also found to be eschewed by the elm leaf beetle Xanthogaleruca luteola [3], but further north at the Morton Arboretum was moderately to highly preferred by the insect.

The tree was one of 12 Chinese species under evaluation at the Morton Arboretum, Illinois, in 2009 by the late Dr George Ware.

The species was named by Camillo Karl Schneider for his friend Carl Bergmann, who assisted in indexing the work in which it was published.