Annual herb up to 1 m tall. Stems ribbed, hairy. Leaves mostly alternate, sometimes opposite, ovate-triangular, up to 10 × 7 cm, 3 veined from the base, with appressed greyish hairs, particularly below, discolorous; margin irregularly toothed. Petiole irregularly winged and auriculate on the stem. Capitula solitary at the ends of branches, c. 2.5 cm in diameter. Rays bright yellow, elliptic-obovate, c. 1 cm long, 3-toothed at the apex. Involucral bracts up to 1.3 cm long, linear, appressed greyish hairy.
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