Galinsoga quadriradiata

Tracheophyta MagnoliopsidaAsteraceaeGalinsogaGalinsoga quadriradiata

Ecology

An annual of arable fields, waste ground, roadsides and rubbish tips, derelict urban sites and cracks in pavements, most often occurring in the larger conurbations. Lowland.

Status

Neophyte

World Distribution

Native of C. & S. America; widely naturalised in Europe and elsewhere.

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 5

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 6

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.8

July Mean Temperature (Celsius): 16

Annual Precipitation (mm): 778

Height (cm): 80

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: 524

Count of 10km squares in Ireland: 5

Count of 10km squares in the Channel Isles: 6

Atlas Change Index: 1.07

Weighted Changed Factor: 56

Weighted Change Factor Confidence (90%)

36

JNCC Designations

NHMSYS0000458958

Atlas text references

Atlas (270d)
Burton RM
1983.  Flora of the London area.
Hultén E, Fries M
1986.  Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Lousley JE
1971.  Flora of the Isles of Scilly.
Meusel H, Jäger EJ
1992.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 3. 2 vols.
Warwick SI, Sweet RD
1983.  The biology of Canadian weeds. 58. Galinsoga parviflora and G. quadriradiata (=G. ciliata). Canadian Journal of Plant Science. 63:695-709.