- Lemnaceae, family Lemnaceae, duckweed family - family of small free-floating thalloid plants
--1 is a kind of monocot family, liliopsid family
--1 is a member of Arales, order Arales
--1 has members:duckweed; Lemna, genus Lemna; Spirodela, genus Spirodela; Wolffia, genus Wolffia; Wolffiella, genus Wolffiella