Erect perennial, 25-100 cm tall, somewhat woody at base, branched above; branches 4-angled with scabrous angles. Leaves oblong to oblong-lanceolate, 3.5-8 cm long, 1.5-3.5 cm broad, deeply serrate, lyrately pinnatifid to subentire, narrowed at the base; hispid, lower petiolate, upper ones sessile. Spikes terminal, paniculate, 10-20 cm long. Flowers pale pink or purplish, c. 4 mm across, subsessile; bracts oblong-ovate, c. 2 mm long, acuminate, ciliate. Calyx tube longer than bracts, minutely 5-toothed, ribbed, hairy. Corolla-tube almost cylindrical, c. 6 mm long, unequally 5-lobed, hairy. Stamens 4, all fertile or occasionally 2 sterile, included; anthers appendaged. Ovary 4-lobed with short style. Fruits of four, 1-seeded, subcylindrical, smooth nutlets.