British NVC community OV19

British NVC community OV19 (Poa annua - Matricaria perforata 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.

This community is found throughout the lowlands of Britain wherever there is suitable habitat.

There are five subcommunities.

Community composition

The following constant species are found in this community:

Shepherd's-purse (Capsella bursa-pastoris)
Scentless mayweed (Matricaria perforata)
Annual meadow-grass (Poa annua)

There are no rare species associated with the community.

Distribution

This ephemeral community is widely distributed throughout the lowlands of Britain. Characteristic habitats are on farm tracks, around gateways where trampling is only moderate, and on verges alongside roads, wherever disturbance and spray-wash from vehicles prevents the development of a closed perennial sward.

Subcommunities

There are five subcommunities:

the Senecio squalidus - Epilobium angustifolium subcommunity
the Lolium perenne - Capsella bursa-pastoris subcommunity
the Atriplex prostrata - Chenopodium album subcommunity
the Chamomilla suavolens - Plantago major subcommunity
the Elymus repens subcommunity

References

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. doi:10.2277/0521391679.

The British National Vegetation Classification: Vegetation of open habitats
OV1 OV2 OV3 OV4 OV5 OV6 OV7 OV8 OV9 OV10 OV11 OV12 OV13 OV14 OV15 OV16 OV17 OV18 OV19 OV20 OV21 OV22 OV23 OV24 OV25 OV26 OV27 OV28 OV29 OV30 OV31 OV32 OV33 OV34 OV35 OV36 OV37 OV38 OV39 OV40 OV41 OV42

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