NVC community SD19 (Phleum arenarium - Arenaria serpyllifolia dune annual community) is one of the 16 sand-dune communities in the British National Vegetation Classification system. It is one of six communities associated with foredunes and mobile dunes. It is a widespread coastal community. There are no subcommunities. Community composition The community has five constant species: Marram (Ammophila arenaria) Thyme-leaved Sandwort (Arenaria serpyllifolia) Sand Sedge (Carex arenaria) Red Fescue (Festuca rubra) Sand Cat's-tail (Phleum arenarium) Two rare species, Early Sand-grass (Mibora minima) and Dune Fescue (Vulpia membranacea), are associated with this community. Distribution This community is widespread but scarce on British coastlines; it is more common in England and Wales than in Scotland, where it has to date only been found at a single site in the southwest. References Rodwell, J. S. (2000) British Plant Communities Volume 5 - Maritime communities and vegetation of open habitats (hardback), (paperback) SD19