Leonurus L.

1 species naturalized Aust.; NSW

*Leonurus japonicus Houtt.

Perennial herb up to 3 m high. Leaves ovate in outline, up to 7 cm long, deeply pinnately or palmately lobed; upper leaves sometimes linear. Flowers in distant or dense verticillate cymes. Calyx 4–5 mm long, 5-lobed. Corolla white to reddish or mauve, up 15–20 mm long, 2-lipped; lower lip lobed; upper lip entire. Coast. Weed; waste places. Introd. from Asia. Fl. winter–summer