Brassica oxyrrhina (Coss.) Wilk.
Annual herb with densely caespitose rosette. Stems erect, glabrous, to 50 cm tall. Lvs green, hairy on midrib, petiolate. Rosette lvs many, pinnatifid to pinnate, 5-15-(30) × 1.5-4-(5) cm; margins dentate; terminal lobe small; lateral lobes acute to acuminate, in (7)-10-15 pairs. Stem lvs few, all simple, linear, entire, c. 1 cm long. Racemes to 50 cm long; open fls below level of buds, nodding after anthesis. Sepals narrow-oblong, 3-4 × c. 1 mm. Petals cream with purple veins, c. 8 × 2 mm. Lateral stamens slightly spreading. Silique terete, glabrous, linear, constricted between seeds, 40-60 × c. 2 mm; gynophore 0; valves with prominent median and 4-6 slightly weaker lateral veins; beak linear, 1-(2)-seeded, (7)-10-18 mm long, = valves. Seeds red-brown, c. 1.5 mm diam.
N.: known from Tokerau Beach, Northland only.
S. Spain, S. Portugal 1979
Established on sand dunes among lupin scrub.
This sp. has also been referred to in N.Z. as B. barrelieri subsp. oxyrrhina.