Fallopia japonica

Tracheophyta MagnoliopsidaPolygonaceaeFallopiaFallopia japonica

Ecology

A persistent rhizomatous perennial forming dense thickets on waste ground, rubbish tips, roadsides, railway banks, along canal, stream and river banks, and on sea-loch shores. Rhizome fragments are dispersed in garden and other rubbish, and by river floods. Lowland.

Status

Neophyte

World Distribution

Native of E. Asia; widely naturalised as a single, male-sterile clone in temperate Europe.

Broad Habitats

Light (Ellenberg): 6

Moisture (Ellenberg): 7

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 6

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.7

July Mean Temperature (Celsius): 14.8

Annual Precipitation (mm): 1043

Height (cm): 200

Perennation - primary

Perennial

Life Form - primary

Non-bulbous geophyte (rhizome, corm or tuber)

Woodiness

Herbaceous

Clonality - primary

Rhizome far-creeping

Count of 10km squares in Great Britain: 2060

Count of 10km squares in Ireland: 689

Count of 10km squares in the Channel Isles: 12

Atlas Change Index: 1.83

Weighted Changed Factor: 3

Weighted Change Factor Confidence (90%)

18

JNCC Designations

NHMSYS0000458716