Caulescent annuals up to 0.5 m. tall. Stem shining-white-pubescent and setiferous; setae ± 1 mm. long, bulbous-based, golden with bases blackened (when dried). Leaves all ovate, up to 8.5 x 4 cm., blade longly cuneate into a narrowly winged petiole; margin bi- (tri-) serrate, apex acute, indumentum as stem but pubescence shorter and setae ± confined to the nerves below. Peduncles not longer than the subtending leaves, indumentum as stem; bracteoles ± 1 mm. long, pubescent; pedicels 3–9 mm. long, indumentum as stem; flowers 1–3 per inflorescence, heterostylous. Calyx indumentum as stem; calyx-tube ± 4.5 mm. long, longly and densely white-hairy within on lower 2.5–3 mm.; tubercles elliptic, 2 mm. long; calyx-lobes 4 mm. long. Petals yellow, ± 15 x 2 mm, adnate for ± 5 mm.; ligule lanceolate, 1.5 mm. long, apex acute. Stamens adnate for ± 0.4 mm.; filaments winged, 5–6 mm. long, 2 shorter and 3 longer. Ovary ± 5 x 1 mm., densely pubescent; styles 3–4 mm. long, stigma deeply laciniate. Mature capsules upright, on straight pedicels, (1.5–) 2–4.5 (–4.8) cm. x 1–1.5 mm., pubescent and ± sparsely setiferous; beak 3–7 mm. long. Aril half the length of the seed or less, rectangular, apex irregularly crenate or lobed.
