There's several Physalis in Florida, P. angulata leaves are not like yours.
http://luirig.altervista.org/f...
Physalis arenicola is the closest I have found, if the photos are correct ...
http://www.flickr.com/photos/8...
http://www.flickr.com/photos/8...
http://florida.plantatlas.usf....
This specimen on Tropicos, Physalis arenicola var. ciliosa shows leaves which look a good match .. not for certain though.
http://www.tropicos.org/Image/...
Name unresolved on The Plant List ..
http://www.theplantlist.org/tp...
Accepted name on ITIS is Physalis arenicola ..
http://www.itis.gov/servlet/Si...
