A prostrate annual of open and trampled ground, especially of well-drained soils, on tracks, paths, roadsides and weedy pavements, around ponds and field gateways. 0-450 m (near Birkdale, Westmorland).
P. arenastrum is widespread throughout Britain and Ireland, although often overlooked as P. aviculare. It has not been mapped previously on a national scale, having been included within P. aviculare agg. in the 1962 Atlas. Its distribution is not likely to have changed appreciably.
As an archaeophyte, P. arenastrum has a Eurasian Wide-temperate distribution; in recent centuries it has become widely naturalised outside this range.
Count of 10km squares in Great Britain: 1937
Count of 10km squares in Ireland: 480
Count of 10km squares in the Channel Isles: 10
PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.
Atlas text references
Docks and knotweeds of the British Isles. Botanical Society of the British Isles Handbook no. 3,
, London, (1981)
The taxonomy of Polygonum aviculare and its allies in Britain,
, Watsonia, Volume 5, p.177-214, (1962)