British NVC community OV24 (Urtica dioica - Galium aparine 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. It is one of four tall-herb weed communities.

This community occurs widely throughout lowland Britain and, if conditions are suitable, is also found in the upland fringes.

There are two subcommunities.

Community composition

The following constant species are found in this community:

• Cleavers (Galium aparine
  Galium aparine
  Galium aparine is a herbaceous annual plant of the family Rubiaceae. It is native to North America and Eurasia. It has several common names, including Cleavers, Clivers, Goosegrass, Stickywilly, Stickyjack, Stickyweed, Stickyleaf, Catchweed, Robin-run-the-hedge and Coachweed.-Growth:The long stems...
  
  )
• Common nettle (Urtica dioica)

There is one rare species associated with the community:

• Three-cornered garlic (Allium triquetrum
  Allium triquetrum
  Allium triquetrum is a Mediterranean plant, but can also be found along the coasts of Oregon and California. Many parts of the plant are edible and taste somewhat like garlic or onion...
  
  )

Distribution

This community occurs widely throughout lowland Britain. Under suitable conditions, it is also found in the upland fringes. It typically occurs on disturbed, nutrient-rich soils and is frequently found around dumps of rich soil, dung, or farm waste, in neglected gardens and around abandoned buildings, on waste land, and on disturbed verges and tracks. It develops best in conditions of partial shade.

Subcommunities

There are two subcommunities:

• the so-called typical subcommunity
• the Arrhenatherum elatius - Rubus fruticosus agg. subcommunity