Matricaria discoidea

Tracheophyta MagnoliopsidaAsteraceaeMatricariaMatricaria discoidea

Ecology

This annual of disturbed, usually fertile ground is found on roadsides, waste ground, tracks and in field gateways, and in arable crops. Generally lowland, but reaching 845 m on Great Dun Fell (Westmorland).

Status

Neophyte

World Distribution

Probably native of N. & S. Asia and perhaps adjacent parts of N. America; in the 19th and 20th centuries it spread to boreal and temperate zones throughout the N. hemisphere.

© P. Shannon

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 5

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 7

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 14.5

Annual Precipitation (mm): 1086

Height (cm): 35

Perennation - primary

Annual

Life Form - primary

Therophyte (annual land plant)

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 2677

Count of 10km squares in Ireland: 945

Count of 10km squares in the Channel Isles: 14

Atlas Change Index: -0.49

Weighted Changed Factor: -19

Weighted Change Factor Confidence (90%)

19

JNCC Designations

NBNSYS0000004462

Atlas text references

Atlas (284b)
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 EJ
1992.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 3. 2 vols.
Salisbury EJ
1964.  Weeds & Aliens, edn 2.