Hydrocotyle bonariensis
A low-growing, perennial herb which grows in moist places, often in sandy soil near brackish lagoons; stems slender, creeping, rooting at nodes; leaves roundish, margins shallowly lobed, stalks attached inside margins; tiny flowers greenish white, clustered in stalked umbels.
Photo by R. Botha courtesy Ecoport
(source URL: http://www.ecoport.org)