It for sure isn't N.odorata....the only thing odorata has in common with the lily in the picture is the flower color. It is a white day blooming hardy and the picture is of a white night blooming tropical.
N. dentata is an invalid name for the species lily N. lotus and not N. 'Juno' which is a cultivar. Mike....N. lotus has been introduced into Florida, but not to my knowledge as far north as Ocala. I see it in SW FL.....Lee and Collier counties. It is not native, the only native night bloomer is N. jamesoniana and it is Hydrocallis and not Lotos....which is what the lily in the picture is. That is Lotos ( subgenus) not lotus ( species). This is a link to the state data base of where vouchered specimen have been found:
http://www.florida.plantatlas.usf.edu/Plant.aspx?id=2005A large part of the problem is that native areas of Florida have been intentionally planted with Nymphaea for years....decades. The pioneers in the aquatics industry, like Albert Greenberg of Everglades Tropical, planted tropicals all over the state instead of building production ponds, per se. So I'd be extremely reluctant to consider a lily from a man made pond in Ocala to be anything other than mongrel. Given the pond owner has no idea of its origin, it could be a seedling of any number of night blooming lilies.
The picture is of N. jamesoniana collected legally ( it is illegal in FL to collect plants from state lands without a permit), by a friend on staff at the U of FL from an area in Collier county, which is about the northen limit of the species range.