A decumbent, widely spreading annual of sand and shingle beaches, more rarely found on saltmarsh-sand dune transitions and saltmarsh drift-lines. Populations are usually small and often of sporadic appearance. A. laciniata typically occurs with Cakile maritima, Salsola kali and other Atriplex species in a mixed strandline community. Lowland.
There has been little change since the 1962 Atlas, though many populations, particularly those close to popular coastal resorts in S. England, have dwindled or been lost altogether due to excessive recreational pressure.
Oceanic Temperate element; also in N. America.