Suncup

Or Evening Primrose.
A delightful Yellow Bloom with an equally delightful fragrance.

For some, it is considered to be a weed because it self-seeds rapidly and establishes itself easily. However, provided it's kept under control, evening primrose has delightful fragrant flowers that open at dusk (to attract the moths) and it is a plant with a number of important medical uses.

This one was found in my friends Garden