sticks to socks in the open grasslands

Size
Height: 5-15 cm, Spread: up to 1 m
Lifespan
Perennial
Diet
Not applicable as this is autotrophic. Photosynthetic herb. Obtains nutrients from well-drained soils.
Habitat
Grasslands, open forests, riverbeds, and disturbed areas. Prefers well-drained soils. Tolerates grazing and moderate shade.
Range
Native to New Zealand and Australia. Found throughout the North Island, South Island, and Stewart Island.
Endemism
Endemic
Main Threats
No significant threats. May be outcompeted by exotic grasses in some areas.
Population
Common throughout New Zealand. Also found in Australia. Not threatened.
Conservation Status
data_deficient
Human Risk
caution
Handling Note
burrs stick to clothing and fur, avoid walking through in shorts
Conservation Note
Endemic herb; data insufficient for full threat classification.
Assessment
NZTCS Vascular Plants (2023)
Te Ao Māori
Piripiri is the Māori name for Acaena species. The leaves were used in traditional medicine for skin conditions and wounds. This softer species would have been gathered for its medicinal properties without the inconvenience of sharp burrs.
It is the polite version. Bidibid, but soft. Acaena anserinifolia is a ground-hugging herb. With fern-like leaves and small, greenish-white flowers. The burrs are less aggressive than its cousin Acaena novae-zelandiae. It will not ruin your socks. The leaves are compound. With toothed leaflets, dark green. The stems creep along the ground. Rooting at nodes. The flowers are small, greenish-white. In dense heads. The fruit is a small burr with soft spines. Acaena anserinifolia grows in grasslands. Open forests. Riverbeds. And disturbed areas. It is adaptable. It is common. The name anserinifolia means goose-footed. Referring to the shape of the leaves. Piripiri is the Māori name for Acaena species. Some had traditional uses. The leaves were used in poultices. The plant had medicinal properties. The species is native to New Zealand and Australia. It belongs in both countries. This softer bidibid is not threatened. It is common. It is widespread. Acaena anserinifolia is a reminder. Not all bidibids are sock-destroyers. Some are soft. Some are polite. The grassland is open. The bidibid spreads. Fern-like leaves. Small white flowers. The burrs are soft. They stick to fur. But not to socks. It has been here for millennia. It will be here as long as the grass remains. It just stays low. That is enough.