Photographs: near Ballingeary, Co. Cork

Hybrid Ragwort Jacobaea vulgaris x aquatica = J. x ostenfeldii (Senecio aquaticus x jacobaea = S. x ostenfeldii) Family: Asteraceae Flowering: June-November. Biennial or perennial. Native. A hybrid between Common Ragwort and Marsh Ragwort. It is intermediate in appearance between the parents and is usually found growing with them. Very variable and less than 15% fertile. Widespread in Ireland but probably under-recorded as it is easily mistaken for Common Ragwort. Identification confirmed by Paul Green

Hybrid Ragwort, Jacobaea vulgaris x aquatica, Jacobaea x ostenfeldii