The Seaside Centaury is similar to the Common Centaury but has narrow leaves and the flowers are of a more intense colour. It is rare in Northern Ireland, being found only at a few sites on the North Coast sand dunes.
All names: Centaurium littorale (Turner ex Sm.) Gilmour; Centaurium minus Moench; Centaurium vulgare Rafn; Erythraea compressa Kunth; Erythraea littoralis (D.Turner) Fr.; Erythraea turneri Wheldon & Salmon