Danthonia decumbens

Tracheophyta MagnoliopsidaPoaceaeDanthoniaDanthonia decumbens


A densely tufted perennial herb of pastures, heathy grassland and moorland, favouring mildly acidic soils. It is also found in calcareous swards, including chalk and limestone grassland, but is then rooted into more acidic, superficial or leached horizons. It is frequent too in damp montane grassland. It spreads by seed and seems to have a persistent seed bank. 0-595 m (Tal-y-fan, Caerns.) and possibly at 1040 m on Macgillycuddy`s Reeks (S. Kerry).



World Distribution

European Temperate element.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 6

Reaction (Ellenberg): 4

Nitrogen (Ellenberg): 2


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.5

July Mean Temperature (Celsius): 14.3

Annual Precipitation (mm): 1160

Life form information

Height (cm): 40

Perennation - primary


Life Form - primary




Clonality - primary

Tussock-forming graminoid, may slowly spread

Distribution information

Count of 10km squares in Great Britain: 2368

Count of 10km squares in Ireland: 814

Count of 10km squares in the Channel Isles: 11

Atlas Change Index: -0.4

Weighted Changed Factor: 29

Weighted Change Factor Confidence (90%)


Distribution information

JNCC Designations


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.

Atlas text references

Atlas (372a)
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 E, Weinert E
1965.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.