Annual. Stems several, usually prostrate, up to ± 1 m long, subterete, pubescent. Leaves often secund, oblong to lanceolate, 20-60 x 5-20 mm, usually hastate-truncate or auricled at base, apex obtuse, lobes entire, bifid or with 2 or 3 teeth; margin entire to subrepand; upper surface dark green, glabrescent, lower surface paler and more densely hairy; petiole 5-10 mm long. Inflorescence axillary, 1- or 2-flowered, rarely fasciculate; peduncle up to 7 mm long in fruit, thinly hairy with long hairs as are bracte-oles, pedicels and sepals; bracteoles linear-lanceolate, 4-7 mm long; pedicels up to 12 mm long in fruit. Sepals subequal, lanceolate to lin­ear, 7-11 mm long, larger in fruit and spreading at apex, hairy. Corolla narrowly funnel-shaped, pinkish mauve with darker centre or rarely white, 12-16 mm long, limb spreading, almost 5-angled, 10-12 mm wide; midpetaline areas distinct, hairy towards tips. Capsule globose, hirsute, 6-8 mm in diameter. Seeds brown, tomentose, 4-5 mm long. Flowering time December to March.