Ulmus davidiana Planch., the David, or Father David, elm, is a small deciduous tree widely distributed across China, Mongolia, Korea, Siberia, and Japan, where it is found in wetlands along streams at elevations of 2000–2300 m (6,500–7,500 ft). The tree was first described in 1873 from the hills north of Beijing, China.
Two varieties of Ulmus davidiana are recognized: var. davidiana, occurring only in China, and var. japonica Rehder, the more widely ranging Japanese Elm.
Ulmus davidiana is considered ...