Lysimachia nummularia - Creeping Jenny

This low-growing creeper is a member of the primrose family, and it is found in damp grassy places away from bright sunlight. The flowers are typically 2 cm across. Creeping Jenny is a close relative of the Yellow Pimpernel, which has narrower leaves and smaller flowers.

The first yellow flowers of creeping jenny appear in May, and blooming usually continues until mid August.