Thespesia populnea
Non-Native in Florida
Seaside mahoe
Also see the page by Marcos Capelini comparing Hibiscus pernambucensis and H. tiliaceus, two difficult-to-distinguish trees, the former of which is native to Florida, the latter of which is a non-native listed as a Category II "invasive exotic" by the Florida Exotic Pest Plant Council.
Click here
to see the herbarium specimen image of the
UNIVERSITY OF FLORIDA HERBARIUM DIGITAL IMAGING PROJECTS.