British NVC community OV4
# British NVC community OV4

British NVC community OV4 (Chrysanthemum segetum - Spergula arvensis community) is one of the open habitat communities in the British National Vegetation Classification system. It is one of six arable weed and track-side communities of light, less-fertile acid soils.

It is widely distributed, and there are two subcommunities.

## Community composition

The following constant species are found in this community:

* Corn marigold (Chrysanthemum segetum)
* Annual meadow-grass (Poa annua)
* Knotgrass (Polygonum aviculare)
* Corn spurrey (Spergula arvensis)

No rare species are associated with the community.

## Distribution

This is a widely distributed community, most commonly found in western Britain.

## Subcommunities

The two subcommunities are:

* the so-called typical subcommunity
* the Ranunculus repens - Sonchus asper subcommunity
