Which is an aquatic plant, Pontederia or Heuchera?
Pontederia Pontederia is a genus of tristylous aquatic plants, members of which are commonly known as pickerel weeds. "Pontederia" is endemic to the Americas, distributed from Canada to Argentina, where it is found in shallow water or on mud. The genus was named by Linnaeus in honour of the Italian botanist Giulio Pontedera.
Utricularia purpurea Utricularia purpurea, the eastern purple bladderwort, is a medium-sized suspended aquatic carnivorous plant that belongs to the genus "Utricularia". "U. purpurea" is endemic to North and Central America. It has been suggested that "U. purpurea" may have partially lost its appetite for carnivory. Richards (2001) did an extensive study in the field on it and noted that trapping rates of the usual "Utricularia" prey were significantly lower than in other species in the genus. Richards concludes that this species can still trap and digest arthropod prey in its specialized bladder traps, but does so sparingly. Instead, it harbors a community of algae, zooplankton, and debris in the bladders that indicates "U. purpurea" favors a mutualistic interaction in place of a predator–prey relationship.