Helianthus tuberosus

Tracheophyta MagnoliopsidaAsteraceaeHelianthusHelianthus tuberosus

Ecology

This perennial herb is occasionally recorded on rubbish tips, waste ground and as a relic of cultivation. Lowland.

Status

Neophyte

World Distribution

Native of N. America.

Broad Habitats

Built-up areas and gardens

Light (Ellenberg): 7

Moisture (Ellenberg): 7

Reaction (Ellenberg): 8

Nitrogen (Ellenberg): 8

0

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.8

July Mean Temperature (Celsius): 16.1

Annual Precipitation (mm): 719

Life form information

Height (cm): 170

Perennation - primary

Perennial

Life Form - primary

Non-bulbous geophyte (rhizome, corm or tuber)

Comment on Life Form

"""overwintering by stolons irregularly tuberized at their tips"" (CTW 1962)"

Woodiness

Herbaceous

Clonality - primary

Rhizome shortly creeping

Count of 10km squares in Great Britain: 156

Count of 10km squares in Ireland: 1

Count of 10km squares in the Channel Isles: 2

Distribution information

JNCC Designations

NBNSYS0000014697

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

Meusel H, Jäger EJ
1992.  Vergleichende Chorologie der zentraleuropäischen Flora. Volume 3. 2 vols.
Swanton CJ, Cavers PB, Clements DR, Moore MJ
1992.  The biology of Canadian weeds. 101. Helianthus tuberosus L. Canadian Journal of Plant Science. 72:1367-1382.