Utricularia amethystina, the Florida purple bladderwort, is a variable species of terrestrial bladderwort native to Bolivia, Brazil, Guyana, Peru, and south-west Florida. The small flowers can be purple, lilac, white, bluish, cream, or bright yellow, and are also highly variable in size and shape.
List of Utricularia species
USDA Plant Profile page
Index of Utricularia photos online
International Carnivorous Plant Society