Roundleaf geranium

Geranium rotundifolium (round-leaved crane's-bill), is a species of annual herb in the family Geraniaceae. It is native in temperate climates across much of Europe, northern Africa, and southwestern Asia; its distribution is spreading north, in response to global warming. The species favours dry, sandy or stony habitat, including old walls, rail ballast, and building rubble, including in urban areas.