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.

Leicestershire & Rutland Map

MAP KEY:

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

UK Map

Species profile

Common names
Pirri-pirri-bur
Species group:
Wildflowers
Kingdom:
Plantae
Order:
Rosales
Family:
Rosaceae
Records on NatureSpot:
10
First record:
09/06/2018 (Nicholls, David)
Last record:
17/08/2023 (Bell, Melinda)

Total records by month

% of records within its species group

10km squares with records

The latest images and records displayed below include those awaiting verification checks so we cannot guarantee that every identification is correct. Once accepted, the record displays a green tick.

In the Latest Records section, click on the header to sort A-Z, and again to sort Z-A. Use the header boxes to filter the list.

Latest images

Latest records