British NVC community OV12 (''Poa annua'' - ''Myosotis arvensis'' community) is one of the
open habitat communities
A community is a Level of analysis, social unit (a group of living things) with commonality such as place (geography), place, Norm (social), norms, religion, values, Convention (norm), customs, or Identity (social science), identity. Communiti ...
in the
British National Vegetation Classification
__NOTOC__
The British National Vegetation Classification or NVC is a system of classifying natural habitat types in Great Britain according to the vegetation they contain.
A large scientific meeting of ecologists, botanists, and other related pr ...
system. It is one of eight arable weed and wasteland communities of fertile loams and clays.
It is a widespread community, in which two
subcommunities are recognised.
Community composition
The following
constant species are found in this community:
* Creeping bent (''
Agrostis stolonifera
''Agrostis stolonifera'' (creeping bentgrass, creeping bent, fiorin, spreading bent or carpet bentgrass) is a perennial grass species in the family Poaceae.
Description
''Agrostis stolonifera'' is stoloniferous and may form mats or tufts. The ...
'')
* Field forget-me-not (''
Myosotis arvensis
''Myosotis arvensis'' or field forget-me-not is a herbaceous annual plant, annual to short lived perennial plant, perennial flowering plant in the family Boraginaceae.
Clive Stace describes this plant as having the following characteristics:
* ...
'')
* Annual meadow-grass (''
Poa annua'')
* Rough meadow-grass (''
Poa trivialis'')
* Knotgrass (''
Polygonum aviculare'')
There are no
rare species associated with the community.
Subcommunities
Two
subcommunities are recognised:
* the typical subcommunity
* the ''Dicranella staphylina - Bryum'' subcommunity
Distribution
This community is widespread throughout Britain. It is characteristic of trampled damp pastures and recreational grasslands, particularly where horse or cattle dung is present (as these aid the distribution of ''Poa annua'' seeds).
References
{{NVC-OV
OV12