Poa trivialis

Tracheophyta MagnoliopsidaPoaceaePoaPoa trivialis

Ecology

A stoloniferous perennial herb of open woodland, meadows, pastures, walls, waste ground, waysides and cultivated land; it also grows in marshes and beside ponds, ditches and streams. It was formerly included in commercial grass-seed mixtures, and is still used in amenity and wild-flower grasslands. It is a common wool alien. Generally lowland, but reaching 1065 m on Carn Eige, Glen Affric (Easterness).

Status

Native

World Distribution

Eurosiberian Wide-temperate element, but widely naturalised so that distribution is now Circumpolar Wide-temperate.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 6

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 6

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 14.5

Annual Precipitation (mm): 1095

Height (cm): 70

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Comment on Life Form

Based on a central rosette; best treated as hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Tussock-forming graminoid, may slowly spread

Clonality - secondary

Shortly creeping and rooting at nodes

Comment on Clonality

Spreads vegetatively in lawns by 'stolons' (CPE); assumed here to be horizonal stems rooting at nodes

Count of 10km squares in Great Britain: 2721

Count of 10km squares in Ireland: 903

Count of 10km squares in the Channel Isles: 11

Atlas Change Index: 1.1

Weighted Changed Factor: -4

Weighted Change Factor Confidence (90%)

39

JNCC Designations

NBNSYS0000002557

Atlas text references

Atlas (381c)
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.