Photographs: Foynes, Co. Limerick

Sticky Groundsel Senecio viscosus Grúnlas greamaitheach Family: Asteraceae Flowering June-September. Annual. Introduced. Flowerheads with spreading yellow rays which roll back as the flowers wither, outer bracts usually dark-tipped. Hairless achenes. The whole plant covered in sticky glandular hairs that trap air-borne debris and dust Found on waste ground, roadsides, ports and rubbish tips on free-draining, disturbed ground and often associated with railway ballast. Scattered distribution but most frequent in north-east Ireland. Similar: Heath Groundsel, Senecio sylvaticus

Sticky Groundsel, Senecio viscosus, Grúnlas greamaitheach