Erigeron floribundus is poorly known in Belgium. It shares the nearly glabrous, ciliate leaves and small capitulae with Erigeron canadensis but has tubular florets that are 5-lobed, the laminae of the ligular florets is lacking and it has a dull, greyish-green appearance (plants are more hirsute hairy). In addition, the inflorescence of Erigeron floribundus is much more open and never cylindrical.