An annual of cultivated land, open summer-droughted grasslands, roadsides and waste places, thriving in well-drained, sandy soils. Lowland.
There has been little change in the distribution of this species since the 1962 Atlas, although it is much better recorded now. G. pusillum is an elusive species and, because of its similarity with G. molle, it may have been overlooked in some squares.
Eurosiberian Temperate element; widely naturalised outside its native range.
Light (Ellenberg): 7
Moisture (Ellenberg): 4
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 7
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.7
July Mean Temperature (Celsius): 15.6
Annual Precipitation (mm): 784
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.