A genus comprising a single North American species, differing from Gleditschia in the thick turgid or terete pod. Name from 31 Gymnocladus 139unarmed, and 31 Gymnocladus 140 a branch, in reference to the absence of thorns.

1. G. Canadensis. Kentucky Coffee Tree.- A deciduous tree of large stature. Leaves very large, bipinnate; leaflets ovate, membranous. Flowers white, in terminal simple or thyrsoid racemes.