Petasites albus

Tracheophyta MagnoliopsidaAsteraceaePetasitesPetasites albus

Ecology

A dioecious rhizomatous perennial herb found established in woods and waste places, on waysides and shady riversides, occasionally forming large stands. The male plant is much more common than the female in our area. Lowland.

Status

Neophyte

World Distribution

Native of the mountains of Europe and S.W. Asia.

Broad Habitats

Light (Ellenberg): 5

Moisture (Ellenberg): 5

Reaction (Ellenberg): 5

Nitrogen (Ellenberg): 7

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 2.8

July Mean Temperature (Celsius): 13.9

Annual Precipitation (mm): 1000

Life form information

Height (cm): 70

Perennation - primary

Perennial

Life Form - primary

Non-bulbous geophyte (rhizome, corm or tuber)

Woodiness

Herbaceous

Clonality - primary

Rhizome far-creeping

Distribution information

Count of 10km squares in Great Britain: 335

Count of 10km squares in Ireland: 10

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: 0.01

Weighted Changed Factor: 15

Weighted Change Factor Confidence (90%)

41

Distribution information

JNCC Designations

NHMSYS0000461629

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 (275a)
Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols,
Hultén, E., and Fries M.
, Königstein, (1986)

Vergleichende Chorologie der zentraleuropäischen Flora. Volume 3. 2 vols,
Meusel, H., and Jäger E. J.
, Jena, (1992)