P. incisa incisaP. incisa R.Br.

Leaves ± shallowly toothed, glabrous or covered with hairs less than 1 mm long, ovate, up to 30 mm long; petiole 1–10 mm long. Calyx 3–5 mm long. Corolla mauve, 7–10 mm long. Erect strongly aromatic much branched shrub up to 3 m high. Widespread. WSF; margins of RF. Fl. spring