British NVC community MC4 (Brassica oleracea maritime cliff-ledge community)

British NVC community MC4 ("Brassica oleracea" maritime cliff-ledge community) is one of the maritime cliff communities in the British National Vegetation Classification system. It is one of five communities categorised as maritime cliff crevice and ledge communities.
This community is found locally on the south coast of England. There are two subcommunities.
Community composition.
Four constant species are found in this community:
Three rare species are associated with this community, Wild Cabbage itself, Early Spider-orchid ("Ophrys sphegodes") and Nottingham Catchfly ("Silene nutans").
Distribution.
This community is found on the south coast of Britain, in west Cornwall, Dorset and Kent.
Subcommunities.
There are two subcommunities: