I've been trying to get to the bottom of this "patternless pine" thing for a while now. Here in Florida, you cannot sell p. m. mugitus unless they are amelanistic. The definition of amel according to Paul Moler of Florida F&W, whom I just recently spoke to, is "without pigment" with the proof being pink or red in the eye color. I did not bring up leucistic animals, but I believe a pure white leucistic would squeak by.
The reason I bring this up is that I see people selling these patternless pines with normal eye color at shows here in Florida. You had best not label these as "southern patternless pines", as southern/Florida is still mugitus in the eyes of F&W according to Moler. Patternless Florida pines do occur in the wild here in Florida. I have seen these myself. Paul is a herper in his own right, and interestingly enough considers the pines in the far western tip of the Florida panhandle to be lodingi/mugitus intergrades. These animals can be legitimately sold here in Florida, as they are not considered mugitus. I recently met a Florida breeder who calls his animals "red pines" or "red patternless pines", as he gets animals of either pattern out of the same clutch. This appears to be the way to legally market these animals at Florida shows. Leave off the "southern" label or you risk a citation and confiscation of your animals.