1) Freshwater plant 2) Genus vallisneria 3) Liliopsid genus 4) Monocot genus 
Vallisneria (named in honor of Antonio Vallisneri) is a genus of freshwater aquatic plant, commonly called eelgrass, tape grass or vallis. The genus has 6-10 species that are widely distributed, but do not grow in colder regions. Vallisneria is a submersed plant that spreads by runners and sometimes forms tall underwater meadows. Leaves arise in c...
Vallisneria is a genus of half-hardy, aquatic, submerged plants belonging to the family Hydrocharidaceae. There is only one species, eel grass, which is grown in aquariums.
[n] - eelgrass
genus Vallisneria noun eelgrass; eel grass