Acaena inermis


A mat-forming perennial with a woody base and herbaceous stems, occurring as a naturalised garden escape by streams and reservoirs and on banks, roadsides and waste ground. Some populations are very persistent. Generally lowland, but reaching 305 m at Heriot (Midlothian).



World Distribution

Native of South Island, New Zealand.

Distribution information

JNCC Designations


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

The species of Acaena with spherical heads cultivated and naturalized in the British Isles,
Yeo, P. F.
, Plants wild and cultivated, Appendix III, Hampton, p.193-221, (1973)