Perennial with thick taproot. Stems annual, prostrate, up to 750 mm long, hairy to glabrescent. Leaves entire, ovate to oblong, 15-40 mm long, hairy to glabrous, base subcordate, apical mucro recurved, margins crisped; petioles 5-10 mm long. Inflorescence 1-flowered; bracteoles lanceolate, up to 10 mm long; peduncles and pedicels thickening, pedicels up to 10 mm in fruit. Sepals subequal, lanceolate-oblong, hairy outside, 8-13 mm long, up to 17 mm long in fruit, then hardened and glabrescent. Corolla funnel-shaped, magenta or purple, 30-50 mm long. Flowering time Dec.-May. Fruit a globose, glabrous capsule, 8-9 mm wide, light brown. Seeds 5 mm long, densely hairy.