Dotted Duckweed: Landoltia punctata (Synonyms: Spirodela oligorrhiza, Spirodela punctata)
Inflated Duckweed: Lemna gibba
Common Duckweed, Lesser Duckweed, Water Lentil: Lemna minor
Least Duckweed: Lemna minuta (Synonym: Lemna minima)
Star Duckweed: Lemna trisulca
Turion Duckweed: Lemna turionifera
Valdivia Duckweed: Lemna valdiviana (Synonym: Lemna cyclostasa)
Skunk Cabbage: Lysichiton americanus (Synonym: Lysichiton camtschatensis)
Greater Duckweed: Spirodela polyrrhiza
Northern Water Meal: Wolffia borealis (Synonym: Wolffia punctata)