British NVC community OV17
Encyclopedia
British NVC community OV17 (Reseda lutea - Polygonum aviculare community) is one of the open habitat
Vegetation of open habitats in the British National Vegetation Classification system
This article gives an overview of the plant communities formed by vegetation of open habitats in the British National Vegetation Classification system.-Introduction:...

 communities in the British National Vegetation Classification
British National Vegetation Classification
The British National Vegetation Classification or NVC is a system of classifying natural habitat types in Great Britain according to the vegetation they contain....

 system. Although classed with communities OV15
British NVC community OV15
British NVC community OV15 is one of the open habitat communities in the British National Vegetation Classification system...

 and OV16
British NVC community OV16
British NVC community OV16 is one of the open habitat communities in the British National Vegetation Classification system...

 as an arable weed community of light lime-rich soils, it also shares many features with the communities classed as arable weed and wasteland communities of fertile loams and clays.

This community is not found elsewhere in Europe, and in Britain is found only in East Anglia
East Anglia
East Anglia is a traditional name for a region of eastern England, named after an ancient Anglo-Saxon kingdom, the Kingdom of the East Angles. The Angles took their name from their homeland Angeln, in northern Germany. East Anglia initially consisted of Norfolk and Suffolk, but upon the marriage of...

. It was first described by Silverside (1977), who labelled it the Descurainio-Anchusetum arvensis association.

There are no subcommunities.

Community composition

The following constant species are found in this community:
  • Bugloss (Anchusa arvensis
    Anchusa arvensis
    Anchusa arvensis is a plant species of the genus Anchusa. Its common names include small bugloss and annual bugloss. This is a hairy annual herb which may reach one half to one meter in height. It bears small blue tubular flowers, four nutlets per flower, and one seed per nutlet...

    )
  • Black-bindweed (Fallopia convolvulus)
  • Fat-hen (Chenopodium album
    Chenopodium album
    Chenopodium album is a fast-growing weedy annual plant in the genus Chenopodium.Though cultivated in some regions, the plant is elsewhere considered a weed...

    )
  • Flixweed (Descurainia sophia)
  • Common couch (Elymus repens
    Elymus repens
    Elymus repens Gould is a very common perennial species of grass native to most of Europe, Asia, and northwest Africa...

    )
  • Knotgrass (Polygonum aviculare
    Polygonum aviculare
    Polygonum aviculare or Common Knotgrass is a plant related to buckwheat and dock. It is also called birdweed, pigweed and lowgrass. It is an annual found in fields and wasteland, with white flowers from June to October....

    )
  • Wild mignonette (Reseda lutea
    Reseda lutea
    Reseda lutea or Wild Mignonette is a species of fragrant herbaceous plant. Its roots have been used to make a yellow dye called "weld" since the first millennium BC, although the related plant Reseda luteola was more widely used for that purpose.A native of Eurasia and North Africa, the plant is...

    )


There are no rare species associated with the community.

Distribution

This community is found only in East Anglia, where it is an ephemeral community among arable crops on dry, sandy soils. It is characterised by the presence of D. sophia, A. arvensis and R. lutea.
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