Brittonia 7: 56. 1950. 1950
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.
Phenology: Flowering year round, mostly winter.
Habitat: Disturbed sites, waste grounds
Elevation: 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).