Marrubium vulgare L.

Much-branched herb with stems to c. 50 cm tall, ± lanate. Petioles slender, < to > lamina, lanate or densely hairy. Lamina 1–3.5 × 1–4.5 cm, broad-ovate to suborbicular, rugose, white-tomentose except for upper surface when mature, crenate or crenate-dentate; base truncate to cuneate in upper lvs and bracts, subcordate in lower lvs; apex obtuse. Verticels dense, globose. Calyx tube 4–6 mm long, with stellate tomentum; teeth 10, rigid, subulate, hooked. Corolla c. 1 cm long, white-tomentose outside; lower lip broader than long. Nutlets c. 2.5 mm long, ± obovoid, sharply keeled.

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

Flowering: Nov.–Mar.