Lycopus europaeus L.

Perennial herb. Stem hairy, to c. 1 m tall. Lvs shortly petiolate or sessile. Lamina 3–8.5 × 1–3 cm, ovate-lanceolate to elliptic, deeply crenate-serrate, hairy at first, becoming glabrous or nearly so; basal area with narrow-oblong or linear-oblong lobes extending to midrib; apex ± acuminate. Upper lvs and bracts smaller, without basal lobes, hairy, especially on veins below. Calyx c. 3 mm long, hairy; teeth > tube, lanceolate-acuminate. Corolla 3.5–4 mm long, white with purple spots on lower lip and in throat. Nutlets 1.2–1.3 mm long, broad-obovoid, glandular and swollen on anterior face, with margin clearly delimited.

[From: Webb et al. (1988) Flora of New Zealand. Volume 4.]

Flowering: Nov.–Apr.