COUNTRYSIDE COUNCIL FOR WALES
SITE OF SPECIAL SCIENTIFIC INTEREST: CITATION
ANGLESEY Y WERTHYR
National Grid Reference: SH375778
Site Area: 9 ha
This wetland site has developed at the head of a short shallow valley running in a northerly direction to the Afon Caradog. It is a relatively intact example of a mesotrophic valley mire or 'poor fen' and has a high water table. Vegetation communities characteristic of this type of habitat are very well represented and include large stands of rushes e.g. the blunt flowered rush Juncus subnodulosus, a variety of sedges e.g. the bottle sedge Carex rostrata and the slender sedge Carex lasiocarpa as well as a range of wetland herbs such as the marsh cinquefoil Potentilla palustris and bogbean Menyanthes trifoliata. There is also a well developed brophyte layer in which various mosses, particularly Acrocladium spp. are abundant. Among the less common species present, the greater spearwort Ranunculus lingua is widely distributed within the site.