Cotula
A group of low-growing, spreading perennials, often with fine foliage, sometimes silvery. Flowers, typically in summer, with button-like flowers.
A member of the daisy family, Cotula has only disc-flowers without the showy rays of many other members of the family. However it is these flowers that are richest in nectar and pollen; as a result they are visited by small bees and flies and the creeping growth is useful to help retain moisture in dry soil.