potamogeton_americanus
1. [ noun ] (botany) pondweed with floating leaves; of northern United States and Europe
Synonyms: Potamogeton_nodosus loddon_pondweed
Related terms: pondweed Potamogeton
Similar spelling:   Potamogeton_crispus
  Potamogeton_nodosus
  Potamogeton_gramineous