Lycopus australis

Stems erect, to 1.5 m high, usually unbranched, with scattered simple hairs, becoming glabrous; leaves sessile to shortly petiolate, c. lanceolate, 4–15 cm long, 0.8–2.5 cm wide, upper surface with scattered simple hairs, lower surface gland-dotted, apex acute, margins coarsely acutely toothed. Cymes c. sessile, few-many-flowered. Calyx 3.5–5 mm long, gland-dotted, lobes acuminate, 1.6–2.5 mm long, ending in a stiff point; corolla white, often mauve-dotted at the base of each lobe, slightly longer than calyx, lobes c. one-quarter as long as tube; stamens shortly exserted; ovary surmounted on a thick disc. Mericarps obloid or obovoid, c. 2 mm long. Flowers Dec.–Apr.