British NVC community OV20 (Poa annua - Sagina procumbens community) is one of the open habitat communities in the British National Vegetation Classification system. It is one of six communities characteristic of gateways, tracksides and courtyards. [1] [2]
This community is widely distributed in the lowlands and upland fringes of Britain.
There are two subcommunities.
Two constant species are found in this community:
No rare species are associated with the community.
This community is widely distributed in the lowlands and upland fringes of Britain. It is found in urban and suburban habitats, occupying crevices between paving slabs and brickwork on streets and pavements, and in courtyards, and also occurs in rural areas, around farms and domestic buildings, wherever there is heavy trampling.
This is the British equivalent of the Papaveri-Sileneetum noctiflori syntaxon, first described by Diemont, Sissingh and Westhoff (1940) from the Netherlands but which is found widely throughout Europe.
There are two subcommunities:
British NVC community OV4 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.
British NVC community OV41 is one of the open habitat communities in the British National Vegetation Classification system. It is one of six communities of crevice, scree and spoil vegetation.
British NVC community OV9 is one of the open habitat communities in the British National Vegetation Classification system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
British NVC community OV6 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.
British NVC community OV7 is one of the open habitat communities in the British National Vegetation Classification system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
British NVC community OV8 is one of the open habitat communities in the British National Vegetation Classification system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
British NVC community OV10 is one of the open habitat communities in the British National Vegetation Classification system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
British NVC community OV11 is one of the open habitat communities in the British National Vegetation Classification system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
British NVC community OV12 is one of the open habitat communities in the British National Vegetation Classification system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
British NVC community OV13 is one of the open habitat communities in the British National Vegetation Classification system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
British NVC community OV14 is one of the open habitat communities in the British National Vegetation Classification system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
British NVC community OV15 is one of the open habitat communities in the British National Vegetation Classification system. It is one of two arable weed communities of light lime-rich soils.
British NVC community OV16 is one of the open habitat communities in the British National Vegetation Classification system. It is one of two arable weed communities of light lime-rich soils.
British NVC community OV18 is one of the open habitat communities in the British National Vegetation Classification system. It is one of six communities characteristic of gateways, tracksides and courtyards.
British NVC community OV19 is one of the open habitat communities in the British National Vegetation Classification system. It is one of six communities characteristic of gateways, tracksides and courtyards.
British NVC community OV21 is one of the open habitat communities in the British National Vegetation Classification system. It is one of six communities characteristic of gateways, tracksides and courtyards.
British NVC community OV22 is one of the open habitat communities in the British National Vegetation Classification system. It is one of six communities characteristic of gateways, tracksides and courtyards.
British NVC community OV23 is one of the open habitat communities in the British National Vegetation Classification system. It is one of six communities characteristic of gateways, tracksides and courtyards.
British NVC community OV24 is one of the open habitat communities in the British National Vegetation Classification system. It is one of four tall-herb weed communities.
British NVC community OV25 is one of the open habitat communities in the British National Vegetation Classification system. It is one of four tall-herb weed communities.
Rodwell, John S, ed. (March 2000). Maritime communities and vegetation of open habitats. British Plant Communities. Vol. 5. Cambridge University Press. ISBN 978-0-521-39167-2.
Diemont, W H; Sissingh, G; Westhoff, V (1940). "Het Dwergbiezenverbond (Nanocyperion flavescentis) in Nederland". Nederlandsch Kruidkundig Archief. Utrecht: Nederlandsche Botanische Vereeniging. 50: 215–71.