"Ulmus thomasii, the Rock Elm or cork elm, is a deciduous tree native primarily to the Midwestern United States. The tree ranges from southern Ontario and Quebec, south to Tennessee, west to northeastern Kansas, and north to Minnesota."@en . . "*Ulmus racemosa (not Borkh.) Thomas)" . . . . "Ulmus thomasii"@en . . . . "*Cork Elm. (Anon.)" . . . .