Rhus spp.
Similar to Ailanthus altissima (Mill.) Swingle
Tree of Heaven may also be confused with some native species of sumac (Rhus spp.). Staghorn Sumac (Rhus typhina L.) and Smooth Sumac (Rhus glabra L.) have toothed leaflets while those of Ailanthus are smooth. Winged Sumac (Rhus copallinum L.) leaflets are entire or nearly so, and the leaf has a narrow strip of leaf tissue running up the stem between the leaflets. Sumacs have a more shrublike form. The small, red, round fruits appear in large, upright, conical clusters and are enjoyed by wildlife.