Diplotaxis tenuifolia (L.) DC.

Perennial, not foetid; stems erect, stout, branching, leafy, glabrous, 30–100 cm tall. Lvs mostly cauline, variable, petiolate, glabrous, linear-lanceolate to lanceolate and toothed, to broadly triangular in outline and deeply pinnatifid, 4–20 × 1–4–(10) cm; upper lvs becoming smaller. Racemes glabrous, (10)–30–60 cm tall. Pedicels 1.5–4 cm long. Sepals triangular, glabrous or rarely sparsely hairy, 4.5–6 × 2–3.5 mm. Petals yellow, spathulate, shortly clawed, 7–12 × 3–5 mm. Silique 20–30–(45) × 1.5–2 mm, on short gynophore (0.5)–1–2 mm long; beak seedless. Seeds oblong, brown, 1–1.5 mm long.

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

Flowering: Nov.–Apr.; Fruiting: Nov.–Apr.