Erigeron acer

Tracheophyta MagnoliopsidaAsteraceaeErigeronErigeron 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

World Distribution

Circumpolar Boreo-temperate element.

© 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

Comment on Life Form

"CTW say ""annual or biennial"""

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

Atlas text references

Atlas (280d)
Curtis TGF, McGough HN
1988.  The Irish Red Data Book. 1. Vascular Plants.
Grime JP, Hodgson JG, Hunt R
1988.  Comparative Plant Ecology.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Meusel H, Jäger EJ
1992.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 3. 2 vols.