Leaves: petioles mostly 1-3 cm; blades mostly 2-8(-12) × 1-5(-7) cm, bases broadly cuneate to truncate or rounded, apices acuminate to attenuate. Peduncles mostly 3-8+ cm. Calyculi of lance-deltate to filiform bractlets 2-10 mm. Involucres 8-12 × 12-20(-25+) mm. Phyllaries puberulent (hairs crinkled), glabrescent. Ray corollas: laminae 12-20+ mm. Disc corollas 8-12 mm, lobes 1.5-2.5+ mm. Cypselae (2-)4 mm; pappi 3-8+ mm. Flowering year round, mostly winter. Disturbed sites, waste grounds; 0-100 m; introduced; Fla.; Mexico; West Indies; Central America. Pseudogynoxys chenopodioides is widely cultivated as an ornamental. In Florida, it persists after cultivation; it may be encountered elsewhere along the Gulf Coast (a report from southern Texas has not been confirmed).