Ground cover plant with tiny yellow flowers

Ground cover plant with tiny yellow flowers

Observation - Ground cover plant with tiny yellow flowers. Description: Ground cover plant growing on clay soil mixed with sand (children's playground). Tiny clumpls of yellow flowers not yet fully open. Sets of three leaves directly beneath the flower head.

Ground cover plant growing on clay soil mixed with sand (children's playground). Tiny clumpls of yellow flowers not yet fully open. Sets of three leaves directly beneath the flower head.