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

Height (cm): 40

Perennation - primary


Life Form - primary




Clonality - primary

Tussock-forming graminoid, may slowly spread

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%)


JNCC Designations


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.