Annual or perennial herbs. Stem decumbent to usually erect, upto 50 cm tall, green to reddish, glabrous. Leaves simple, opposite, on glabrous to sparsely pilose, narrowly winged, petiole, lamina broadly ovate to deltate, 5–10 cm long, 4–8 cm wide, usually glabrous on either side, truncate to shortly attenuate, undulate – dentate to ± entire, acuminate to acute. Capitula solitary, discoid, 10.5–23.5 mm long, 11–17 mm across, on 3.5–12.5 cm long, glabrous to sparsely pilose peduncles. Phyllaries 15–18, triseriate, herbaceous, entire to sinuate, sparsely ciliate, those of outer series 5 or 6, 5.5–7.5 mm long, 2–2.8 (–3) mm wide, usually narrowly ovate to lanceolate or sometimes ovate, acute. Paleae membranous. Florets 400–600, pale yellow when young, reddish at old stage, 2.7–3.4 mm long, 5–lobed; lobes 0.3–0.6 mm long, 0.2–0.4 mm wide. Stamens 1.4–1.7 mm long. Cypselas 2–2.5 mm long, 0.9–1.1 mm wide, moderately to densely ciliate with straight–tipped hairs. Pappus of 2 unequal bristles.