Scientific name Agrostis stolonifera – Calliergonella cuspidata – Sand Sedge duneland
Common name Creeping Bent – Pointed Spear-moss – Sand Sedge duneland
Community code DU3B


DU3B: Agrostis stolonifera – Calliergonella cuspidata - Carex arenaria duneland  DU3B: Agrostis stolonifera – Calliergonella cuspidata - Carex arenaria duneland  DU3B map: Agrostis stolonifera – Calliergonella cuspidata - Carex arenaria duneland

Download full pdf synopsis: DU3B



The vascular vegetation in this dune slack community is chiefly formed of a mixture of Agrostis stolonifera, Potentilla anserina, Carex arenaria, Carex nigra, Ranunculus repens, Trifolium repens and the circular, fleshy leaves of Hydrocotyle vulgaris. Beneath is a characteristically abundant layer of the pointed shoots of Calliergonella cuspidata. Frequently there is some Carex flacca or some patches of the prostrate shrub Salix repens.


This seasonally-inundated community typically occurs towards the rear of coastal duneland systems where it represents stands from the centre of dune slacks.



No sub-communities are described.


Similar communities

The combination of abundant Calliergonella cuspidata and high sedge cover separates this vegetation type from most other duneland communities. Where Salix repens is found, DU3A Salix repens – Lotus corniculatus should also be considered, but that occurs on drier areas. Carex arenaria and Salix repens do not occur in the fens of the FE3 Agrostis stolonifera – Carex nigra group.

Conservation value

Most examples of this vegetation correspond to the EU HD Annex I habitat 2190 Dune slacks



Grazing livestock have access to this community at many sites. Desiccation due to drainage is a problem in some dune slack systems. Other pressures, which may be linked to the drainage, come from agricultural intensification and recreation.