Aster tripolium

Tracheophyta MagnoliopsidaAsteraceaeAsterAster tripolium


A short-lived perennial herb occurring at low elevations in ungrazed or lightly grazed saltmarshes, especially along creeksides, and also on muddy sea-banks, tidal river banks and in brackish ditches. In W. Britain and Ireland it also grows amongst rocks and on exposed sea-cliffs. It also occurs very locally in inland saltmarshes and recently it has been recorded beside salt-treated roads. Lowland.



World Distribution

Eurasian Temperate element.

Broad Habitats

Littoral sediment (includes saltmarsh and saltmarsh pools)

Light (Ellenberg): 9

Moisture (Ellenberg): 8

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 6

Salt Tolerance (Ellenberg): 5

January Mean Temperature (Celsius): 4.3

July Mean Temperature (Celsius): 14.8

Annual Precipitation (mm): 1109

Height (cm): 100

Perennation - primary


Life Form - primary


Comment on Life Form

CTW say that short-lived



Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 703

Count of 10km squares in Ireland: 267

Count of 10km squares in the Channel Isles: 3

Atlas Change Index: -0.44

Weighted Changed Factor: 8

Weighted Change Factor Confidence (90%)


JNCC Designations


Atlas text references

Atlas (280b)
Atlas Supp (72b)
Clapham AR, Pearsall WH, Richards PW
1942.  Biological Flora of the British Isles. No. 8. Aster tripolium L. Journal of Ecology. 30:385-395.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Lee JA
1977.  The vegetation of British inland salt marshes. Journal of Ecology. 65:673-698.
Meusel H, Jäger EJ
1992.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 3. 2 vols.