Other names: Rough-seeded Buttercup.
Family: Ranunculaceae (Buttercup family).
Native of Europe.
Occurrence: Scattered weed. It can invade native bushland, particularly where there is additional moisture. It may be locally abundant.
Other species: There are several native and introduced buttercups. The shape and wartiness of the seeds, the toothed leaves, and the often more or less prostrate habit help identify this species.
Photos : Above: Sharp Buttercup. Turner St, Castlemaine. 1, 2: Flowers and leaves. 3: Flower and fruit.