Calliergon cordifolium Heart-leaved Spear-moss

A dioicous, pleurocarpous moss of swampy habitats including dune slacks and wet, flushed grassland. It is tolerant of shade and is a frequent member of swampy alder-willow carr and other wet places where there is a lot of decaying plant matter. It has a scattered distribution in West Glamorgan and is frequent in the wet alder woodlands of Oxwich Marsh and Crymlyn Fen and in similar places near the Tennant and Neath canals.