Some distinguish characteristics:
- Gleason and Cronquist note that it lacks stipules and it's leaves are hairy on both sides. I don't recall noticing this in the field, but I also wasn't looking carefully. (I tried to zoom in to the pic, but no luck.)
- The fruits are apparently quite showy. I'll keep my eye out for this in the future.
- The UCONN Plant Database also had a good entry for this species, which pointed out features like pubescents on both surfaces of the leaves, but more densely so near veins, and the presence of bright orange lenticels.