Perennial herb, up to 0.45 m high. Stems erect, branched; patently hairy. Leaves sessile, spreading; blade narrowly ovate, hirsute on both surfaces, lower leaf blades up to 50 x 5 mm, decurrent, long attenuate, apices obtuse, upper leaves with acute apices. Flowers: in terminal, leafy cymes; calyx irregular, densely hirsute; corolla with tube much longer than calyx, ± 6 mm long, lobes ± 1.5 mm long; white; Oct.-Dec.