Which plant is an aquatic plant species, Andira or Watercress?
Andira Andira is a genus of flowering plants in the legume family, Fabaceae. It is distributed in the tropical Americas, except for "A. inermis", which also occurs in Africa. It was formerly assigned to the tribe Dalbergieae, but recent molecular phylogenetic evidence has placed it in a unique clade named the "Andira" clade.
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.