Piri piri burr - Acaena novae-zelandiae

Description

A prostrate dwarf plant which can produce dense mats of leaves and ball-like heads of spiny, hooked seeds (burs).

Identification difficulty
Habitat

Bare ground including sand dunes, cliffs, heaths, conifer plantations on sandy soils, old gravel workings, roadsides and disused railways.

When to see it

In flower during June, July and August.

Life History

Perennial herb. Reproduction is from seed, and sometimes from pieces of rooted stolon. Recognised as an alien and invasive threat to some habitats where it forms dense mats of growth that suppress native species.

UK Status

Occasional but widespread in Britain.

VC55 Status

First VC55 record came from Leicester in 2010 but it is likely to become more frequent in our area.

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Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map