Erigeron acer
Tracheophyta
›Magnoliopsida›Asteraceae›Erigeron›Erigeron acer
Ecology
An annual or perennial herb of open, well-drained, skeletal neutral or calcareous soils, often on warm, S.-facing slopes. Habitats include sand dunes, sand-pits, spoil and waste heaps from quarries, railway ballast, industrial waste and cinders. It also grows on rock outcrops, especially of chalk and limestone and on mortared walls. 0-430 m (Banffs.).
Status
Native
Trends
The overall range of E. acer is stable, although there are now many more records from the English Midlands than there were in the 1962 Atlas, and it appears to have declined locally in some areas, particularly parts of S.E. and E. England.
World Distribution
Circumpolar Boreo-temperate element.
© P. Shannon
Bray, vc17
© P. Shannon
Bray, vc17
© P. Shannon
Marford, vc50
© P. Shannon
Broad Habitats
Light (Ellenberg): 8
Moisture (Ellenberg): 5
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 3
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.8
July Mean Temperature (Celsius): 15.9
Annual Precipitation (mm): 774
Height (cm): 50
Perennation - primary
Annual
Perennation - secondary
Biennial, including monocarpic perennials
Life Form - primary
Therophyte (annual land plant)
Life Form - secondary
Hemicryptophyte
Woodiness
Herbaceous
Clonality - primary
Little or no vegetative spread
Count of 10km squares in Great Britain: 974
Count of 10km squares in Ireland: 80
Count of 10km squares in the Channel Isles: 5
Atlas Change Index: 0.33
Weighted Changed Factor: 12
Weighted Change Factor Confidence (90%)
29
JNCC Designations
NBNSYS0000004436
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