NVC community SD1 is the only shingle community 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 a fairly widely distributed community. There are two subcommunities.

Community composition

Two constant species, Yellow Horned-poppy (Glaucium flavum) and Curled Dock

Curled Dock

Curled Dock , also known as Curly Dock, Yellow Dock, Sour Dock, Narrow Dock, sometimes as "narrow-leaved dock" , and ambiguously as "garden patience", is a perennial flowering plant in the family Polygonaceae, native to Europe and Western Asia.The mature plant is a reddish brown colour, and...

 (Rumex crispus), are found in this community:

One rare species, Sea-kale (Crambe maritima), is also associated with the community:

Distribution

This community is found in many localities on the south and east coasts of England, from Norfolk to Dorset, and also in scattered localities in the Isles of Scilly, Wales, northwest England and southwest Scotland.

Subcommunities

There are two subcommunities:

• the so-called typical subcommunity
• the Lathyrus japonicus subcommunity