Which plant is an aquatic plant species, Andira or Watercress?
Watercress Watercress is an aquatic plant species with the botanical name Nasturtium officinale. This should not be confused with the profoundly different and unrelated group of plants with the common name of nasturtium, within the genus "Tropaeolum".
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.