| Latin Name | Common Name | Family | Synonyms | Edibility Rating | Medicinal Rating |
| Lemna gibba | Gibbous Duckweed, Swollen duckweed, Windbags, Duckweed | Lemnaceae | | 3 | 0 |
| Lemna minor | Duckweed, Common duckweed | Lemnaceae | | 1 | 2 |
| Lemna trisulca | Star Duckweed | Lemnaceae | | 0 | 1 |
| Spirodela polyrrhiza | Great Duckweed, Common duckmeat | Lemnaceae | Lemna polyrhiza | 1 | 2 |
| Wolffia arrhiza | Least Duckweed, Spotless watermeal | Lemnaceae | | 4 | 0 |