Lemna trisulca L.
Family: Araceae
forked duckweed, star duckweed
Lemna trisulca image
Matthew L. Wagner  
Etymology: Lemna: from Greek limnos, "lake or swamp," referring to its aquatic habitat
Plants: floating perennial aquatic, fronds can stay hooked together forming large mass; stems none; 1 root per frond
Leaves: oar-shaped, flat with long stalk, 3 faint nerves, olive green
Fruits: winter buds from fronds that sink
Habitat: wet; bays, ponds
Conservation Status: Native