Clammy Locust (Robinia viscosa Vent.)

↑Range - Expand

Legend	Color
Native
Introduced
Native or Not Present
Introduced or Not Present
Native or Introduced
Native or Introduced or Not Present

This tentative map is based on our own research. It may have limited data on Canada and/or Mexico, and there is some subjectivity in our assignment of plants as introduced vs. expanded. Read more in this blog post.

This species represented a difficult subjective judgment call. It is widely planted as an ornamental and has escaped and formed new populations, but these are for the most part discontiguous with its native range, and this species is uncommon in the parts of its native range closest to its new range, and shows no evidence of increasing there. As such we have classified new populations as Introduced, but they could perhaps also be classified as Expanded because there are places where the new range is only separated from the native range by relatively small distances.