Leaf blades 3-10 × 2-5 cm. Ray corollas: tubes ca. 2 mm, laminae narrowly ovate to linear, 2-4 mm. Disc corollas ca. 3 mm. Cypselae ca. 4 mm. 2n = 36, 38, 40.

Flowering (sporadically) year round. Ruderal in ± wet places; 0-10 m; introduced; Fla.; Mexico; West Indies; Central America; South America; also introduced in Asia, Africa, Pacific Islands, Australia.

Synedrella nodiflora probably is a recurrent introduction and probably does not persist in the flora area.