Gastridium ventricosum

Tracheophyta MagnoliopsidaPoaceaeGastridiumGastridium ventricosum


An annual of well-drained grasslands on calcareous substrates, especially on S.-facing slopes where the turf is broken by patches of crumbling soil. It used to be a frequent weed of cornfields, and is an occasional wool and grain casual. Lowland.



World Distribution

Mediterranean-Atlantic element.

© G. Toone, IWNHAS

Broad Habitats

Light (Ellenberg): 9

Moisture (Ellenberg): 3

Reaction (Ellenberg): 8

Nitrogen (Ellenberg): 2


Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 4.6

July Mean Temperature (Celsius): 16.3

Annual Precipitation (mm): 839

Life form information

Height (cm): 50

Perennation - primary


Life Form - primary

Therophyte (annual land plant)



Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 159

Count of 10km squares in Ireland: 0

Count of 10km squares in the Channel Isles: 2

Atlas Change Index: -0.48

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 (400a)
Alien grasses of the British Isles,
Ryves, T. B., Clement E. J., and Foster M. C.
, London, (1996)

The distribution, ecology, history and status of Gastridium ventricosum (Gouan) Schinz & Thell. in the British Isles,
Trist, P. J. O.
, Watsonia, Volume 16, p.43-54, (1986)

British Red Data Books. 1. Vascular plants, edn 3,
Wigginton, M. J.
, Peterborough, (1999)