I know its either a Pacific Rosewood ( Thespesia populnea ), Sea Hibiscus (Hibiscus tiliaceus). The tree has no flowers on it so I cant tell by that. Anyone have any ideas?

Is there another way to tell?

I got this information off of this website: http://www.hibiscus.org/species/tpopulnea.php

"CONFUSING SPECIES

Thespesia populnea may be confused with Hibiscus tiliaceus which was the topic of an earlier 'Marvellous Mallows'. Both belong to the family Malvaceae but are relatively distantly related, Thespesia being much closer to cotton (genus Gossypium). The leaves of H. tiliaceus are wider, with dense star-shaped hairs on lower surfaces. T. populnea has more elongated heart-shaped leaves and five dark dots at the centre of its flowers. As well, in T. populnea the sepals form a smooth-edged cup (vs.pointed tips), the leaf blades are slightly fleshy, hairless, narrower, above green and smooth-edged (vs. papery, hairy below, broader, above dark green and toothed leaf blades) and the stigmas are yellow (vs. deep crimson purple)."

Thanks in advance.

Paul

PS I live in the Florida Keys.

Photos of the tree: