Erysimum cheiranthoides L.

Annual, sometimes overwintering, herb. Hairs appressed, medifixed, sometimes stellate. Stems erect, up to 1 m tall. Rosette lvs simple, oblong-lanceolate, acute, shortly stalked, distantly toothed, hairy, 2–10 × 0.5–3 cm. Stem lvs narrower, smaller, becoming sessile. Racemes 10–30 cm long. Sepals hairy, 2–3 × c. 0.5 mm. Petals yellow, 4–6 × 2–3 mm. Silique 4-angled, slightly curved, 10–25 × c. 1.2 mm, erect on erecto- patent pedicel 5–10 mm long. Seeds brown, shortly winged at apex, 1–1.2 mm long.

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

Flowering: Jan.; Fruiting: Jan.–Mar.