|Scientific name||Holcus lanatus – Lolium perenne grassland|
|Common name||Yorkshire-fog – Perennial Rye-grass grassland|
Download full pdf synopsis: GL2C
This is a very species-poor assemblage and there are only a few constant species. Holcus lanatus, Agrostis stolonifera and Lolium perenne form the bulk of the medium-height sward alongside Ranunculus repens and Trifolium repens. Cerastium fontanum is frequent and, together with Lolium perenne and Trifolium repens, is indicative of the agriculturally-improved nature of the community. Poa trivialis would have been frequent in this community in the past as it was included in old seed mixes; it is probably less frequent now.
The Holcus lanatus – Lolium perenne grassland is a variable semi-improved community of wet pastures and meadows found commonly across the country, that occurs on gleyed or drained mineral soils. Soils are fairly acidic and, despite the agricultural improvement, the vegetation suggests that they are only mildly fertile.
Two sub-communities have been described. The Poa annua – Rumex obtusifolius sub-community (GL2Ci) represents slightly more improved grasslands which are heavily grazed and therefore trampled. The Anthoxanthum odoratum – Rumex acetosa sub-community (GLC2ii) is less heavily grazed and slightly damper.
Juncus spp. are not as frequent as they are in communities GL2B and GL2D and should not dominate. The semi-improved grasslands of GL3B Lolium perenne – Trifolium repens grassland are better drained and typically, with the exception of sub-community GL3Biii, more species-rich.
This is a species-poor grassland community of relatively low conservation value.
These swards are managed as improved grazing land (typically for cattle) and/or for silage. Fertiliser application and re-seeding will typically occur periodically. The main threats to these grasslands include further improvement and abandonment.