Physostegia Benth.

1 species naturalized Aust.; NSW

*Physostegia virginiana Benth.

Perennial, rhizomatous, herb up to 1 m high. Leaves lanceolate, up to 12 cm long and 4 cm wide, sessile, margins toothed. Inflorescence a spike up to 25 cm long. Flowers white, lavender or purple. Corolla c. 3 cm long, 2 lipped. Upper lip hooded lower lip 3-lobed. Stamens 4 with purple anthers. Occasionally naturalized. Coastal. Introd. from N. America. Obedient Plant