Datura ferox L.

Somewhat foetid annual herb to c. 1 m tall, ± puberulent, at least when young. Stems light green. Petiole to 8 cm long. Lamina 5–18–(25) × 4–16–(20) cm, broadly ovate, shallowly lobed; veins somewhat puberulent, especially above; apex of lobes obtuse or subacute. Calyx 2.5–3.5 cm long, ribbed, reflexing at fruiting; teeth 3–5 mm long, subequal. Corolla c. 5 cm long, funnelform, white; lobes 1–2 mm long, aristate. Fr. to 5–(6) × 3–(4) cm (excluding spines), narrowly elliptic-ovoid, erect; spines moderate in number, to 2.5–(3) cm long, stout, the uppermost > lower. Seed c. 4 mm wide, subreniform, black, rugose.

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

Flowering: Nov.–Apr.