Colls. from CLAR (Widrlechner 1998), HARD & LESL (M. Medley for WKY) have been referred to this taxon, following the treatments of Bailey (1943) and F. However, this species has previously been known only on or near the Piedmont of Ga., S.C., N.C. and Va. The only clear difference from enslenii may be its relatively hairy, often glandular, petioles and pedicels. Some colls. (e.g. from BATH at KY) have been referred to R. scambens Bailey, a closely related taxon from Va. to Mass. that differs from leviculus in its relatively broad leaflets and more robust canes. Further revision is needed to determine the degree of distinction in these taxa.