A perennial herb, occurring on base-enriched soils in a wide variety of habitats, including damp woods and carr, damp neutral grassland, marshes, mires, swamps and tall-herb fens, sea-cliffs, ungrazed montane grassland and mountain ledges. Reproduction is by seed. 0-855 m (Helvellyn, Cumberland).
The distribution of A. sylvestris is stable.
Eurosiberian Boreo-temperate element.
Light (Ellenberg): 7
Moisture (Ellenberg): 8
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 5
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.5
July Mean Temperature (Celsius): 14.4
Annual Precipitation (mm): 1109
Height (cm): 200
Perennation - primary
Life Form - primary
Clonality - primary
Count of 10km squares in Great Britain: 2726
Count of 10km squares in Ireland: 968
Count of 10km squares in the Channel Isles: 5
Atlas Change Index: 0.12
Weighted Changed Factor: -29
Weighted Change Factor Confidence (90%)
Atlas text references
1988. Comparative Plant Ecology.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
1978. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 2. 2 vols.
1980. Umbellifers of the British Isles. Botanical Society of the British Isles Handbook no. 2.