Vallisneria Vallisneria americana Vallisneria asiatica var biwae Vallisneria gigantea Vallisneria spiralis Vallisneria is found world wide: North, South, and Central America; Africa; Asia-Pacific. Plant Symbol Definitions what's new | tropical fish home | rainforests | news | search | about | contact Copyright Rhett Butler 1994-2013 If you find errors, such as outdated scientific names, please feel free to send corrections to us.