Prunella L.

2 species naturalized Aust.; all states and territories except NT

Perennial herbs with 4-angular branches. Leaves opposite, petiolate, toothed to lobed. Flowers in terminal ovoid to ellipsoid spike-like thyrses. Calyx 2-lipped; lower lip with deep lobes; upper lip with almost obsolete lobes. Corolla 2-lipped. Stamens 4.