Found on old walls, cliffs, pavements and dry, rocky places, this is a slender perennial plant. It grows to 50 cm high, bearing spindly, daisy-like flowers (13–16 mm) in inflorescences on slender, leafy stems from July to September. The white ray florets are narrow and frequently turn pink as they age; these encircle a yellow cushion of disc florets. The lower leaves are toothed whereas the narrow, upper leaves are entire. Originally from Mexico, this plant was introduced into gardens in the mid-nineteenth century and has now established itself in several locations. It is a member of the Asteraceae family.
I first recorded this plant near Shankill, County Dublin in 1978 and photographed it in Dalkey, County Dublin in 2010.
If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre