NVC community M4 is one of the mire

Mires in the British National Vegetation Classification system

This article gives an overview of the mire communities in the British National Vegetation Classification system.-Introduction:The mire communities of the NVC were described in Volume 2 of British Plant Communities, first published in 1991, along with the heath communities.In total, 38 mire...

 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 localised community of northern and western Britain. There are no subcommunities.

Community composition

The following constant species are found in this community:

• Bottle Sedge (Carex rostrata)
• Common Haircap (Polytrichum commune)
• Feathery Bog-moss (Sphagnum cuspidatum)
• Flat-topped / Flexuous Bog-mosses S. recurvum

Two rare species are associated with the community:

• String Sedge (Carex chordorrhiza)
• Tufted Loosestrife (Lysimachia thrysiflora)

Distribution

This community is found in Cornwall

Cornwall

Cornwall is a unitary authority and ceremonial county of England, within the United Kingdom. It is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Cornwall has a population of , and covers an area of...

 and in various locations in 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

Northern England

Northern England, also known as the North of England, the North or the North Country, is a cultural region of England. It is not an official government region, but rather an informal amalgamation of counties. The southern extent of the region is roughly the River Trent, while the North is bordered...

 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...

.