Photographs: Foynes port, Co. Limerick

Narrow-leaved Pepperwort Lepidium ruderale Family: Brassicaceae Flowering May-August. Annual or biennial. Introduced. Many small greenish flowers with usually 2-4 stamens. The fruits are shorter than their stalks, narrow-winged and with a shallow notch. Lower leaves are pinnate, the upper simple and linear. Stem leaves are not clasping. Erect growth and often much-branched. Height to 45cm. A rare casual on bare waste ground, usually at ports and along nearby roadsides and probably introduced with grain or animal feeds. Identification confirmed by Paul Green

Narrow-leaved Pepperwort, Lepidium ruderale