Plant: small aquatic plant Leaves: FRONDS obovate to circular, rounded or pointed at the apex, 1.5-10 mm long, 1-1.5 times as long as wide, flat or rarely gibbous, sometimes with a red spot in the center of the upper surface; nerves 7-16(-21) Flowers: very rare, 1-2-ovulate, the stamens 2, 4-locular Fruit: 1.0-1.5 mm long, laterally winged to the top; SEEDS 1-3, with 12-20 distinct ribs Misc: Rather eutrophic, quiet waters; below 2450 m (8000 ft); Jun-Sep Notes: roots 7-21, up to 3 cm long; turions sometimes present, small, circular to reniform, brownish to olive, rootless REFERENCES: Landolt, Elias. 1992. Lemnaceae. Ariz.-Nev. Acad. Sci. 26(1)2.