NVC community U6 is one of the calcifugous grassland communities in the British National Vegetation Classification

British National Vegetation Classification

The British National Vegetation Classification or NVC is a system of classifying natural habitat types in Great Britain according to the vegetation they contain....

 system.

It is a comparatively localised community. There are four subcommunities.

Community composition

The following constant species are found in this community:

• Sheep's Fescue
  Sheep's Fescue
  Sheep's Fescue or Sheep Fescue is a species of grass.-General Description:It is a perennial plant sometimes found in acidic ground, for example in the Portlethen Moss, Scotland and mountain pasture, throughout Europe and eastwards across much of Asia; it has also been introduced to North...
  
   (Festuca ovina)
• Heath Rush (Juncus squarrosus)
• Common Haircap Polytrichum commune
• Bifid Crestwort Lophocolea bidentata sensu lato

One rare species is associated with the community, Greater Pawwort, Barbilophozia lycopodioides.

Distribution

This community is found locally in the uplands of Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

, northern England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 and Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

.

Subcommunities

There are four subcommunities:

• the Sphagnum spp. subcommunity
• the Carex nigra - Calypogeia trichomanis subcommunity
• the Vaccinium myrtillus subcommunity
• the Agrostis capillaris - Luzula multiflora subcommunity