This little plant has very similar flowers to those of Procumbent Yellow-sorrel but its leaves are dark bronze. It also scrambles across waste ground and gardens but tends to prefer a greenhouse habitat to being outdoors, braving the elements. It is a garden escape, somewhat invasive and is known to climb. An annual or perennial, it belongs to the Wood-sorrel family.
I first recorded this plant in Coolcots, Co Wexford in 2012 when Mary Foley, a co-member of the Wexford Naturalists' Field Club, showed it to me growing and invading her greenhouse.
If you are satisfied you have correctly identified this plant, please submit your sighting to the National Biodiversity Data Centre