Lamium purpureum L.

Annual herb with lax, hairy, spreading to erect stems to c. 50 cm long, often < 7 cm long in dry situations. Petioles to c. 6 cm long, slender. Lamina 2–4.5 × 1.5–3.2 cm (infl. lvs sometimes smaller), ovate to suborbicular, hairy, especially above, crenate; base truncate to cordate. Bracts similar to lvs but often larger and with short petioles. Calyx 4–9 mm long, accrescent, hairy; teeth ± = tube, subulate, often purple. Corolla 10–14 mm long, purple or deep pink; tube with prominent ring of hairs inside near base; upper lip 3–4 mm long, tomentose outside; lower lip spotted dark purple, deeply emarginate, the lateral lobes very small and toothed. Nutlets 2.2–5 mm long, sharply angled, often patterned white.

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

Flowering: Sep.–Nov.–(Aug.)