Weld / Dyers Rocket
Tall spikes small yellow-green flowers, 4 petals and sepals. Basal leaves in rosette, all leaves lanceolate with pale mid-rib, un-lobed. Upper leaves very small-toothed
or entire. Fruit globular, 3-lobed. Erect, stiff stems, branched near top. To 100cm.
Most frequent in S, E and central Ireland. Prefers gravelly dry ground.
Roadsides, waste ground, less often on grassland.
Similar: Wild Mignonette, R. lutea