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
References