Photographs: Bantry, Co. Cork

Common Evening-primrose Oenothera biennis Coinneal oíche Family: Onagraceae Flowering: June-September. Biennial. Garden escape. Introduced. Large pale yellow flowers, 40-50mm diameter. Anthers equal stigmas. Greenish sepals. Erect rigid stems, green at top, no red-based hairs. Broad lanceolate leaves in basal rosette, stalk-less stem leaves. Slightly scented. 60-120cm Open ground on sandy soils. Waste ground, railway embankments, roadsides. Naturalised garden escape. Much hybridisation. Photographs are not Common Evening-primrose but probably of a hybrid. Correction: Paul Green

Common Evening-primrose, Oenothera biennis, Coinneal oíche