Centipeda cunninghamii (Dc.) A.Braun & Asch.

Erect or ascending perennial (annual in hard sites) to c. 30 cm high, glabrous or cottony on new growth, rarely cottony overall. Leaves oblong or narrowly obovate, 7–30 mm long, 2.5–7 mm wide, serrate. Inflorescence a single sessile capitulum, often in branch axils. Capitula biconvex, hemispherical or subglobular, 4–6 (–8) mm diam.; involucral bracts obovate, 1.5–3 mm long; receptacle ±hemispherical. Female florets c. 200–350, in 7–12 rows; corolla 0.3–0.5 (–7) mm long. Bisexual florets c. 20–50 (–70); corolla 0.7–0.8 mm long. Fruiting heads usually remaining intact until stems senesce; bracts widely spreading; fruiting receptacle 1.8–2.5 (–3.5) mm diam., with a pith layer entirely contained within the dome. Achenes oblong, 1.2–1.6 (–2) mm long, at least 3 times as long as wide, truncate or rounded at apex, with 4 prominent ribs, occasionally with 1 or 2 minor ribs; ribs with antrorse hairs, usually tightly inrolled at apices; pericarp spongy or corky in distal 25%, very thin between ribs below with brown testa of seed apparent.

Grows on banks of perennial rivers, lakes and dams, on sandy, silty or clayey soils.