Annual herb; stems glabrescent or with scattered decurved hairs. Leaves broadly ovate, 7–20 mm long, 10–25 mm wide, surfaces pilose, apex obtuse to rounded, base cordate to truncate, margin crenate and/or lobed; lower leaves petiole 1–5 cm long, upper leaves sessile and usually stem-clasping. Lower internodes of inflorescence usually distant, upper internodes very short, sometimes obscured; flowers mostly 1–5 per bract. Calyx 10–15-veined, 5–7 mm long, densely hairy, lobes 3–4.5 mm long; corolla (6–)14–20 mm long, pale pink to rose-coloured, usually spotted darker, pubescent outside, tube much longer than calyx, corolla-lips shorter than tube, median lobe of abaxial lip lobe narrowly spathulate, lateral lobes broad and scarcely distinct, upper lip entire. Flowers Jul.–Nov.