Acaena L.

7 species native Aust.; all states and territories except NT

Perennial herbs. Leaves pinnate, usually silky hairy all over; stipules adnate to the petiole, sheathing at the base. Flowers small. Sepals 4–5, valvate in the bud. Petals absent. Stamens 2–10. Carpel solitary, rarely 2; style exserted. Fruit an achene enclosed in the hardened floral tube which is almost closed at the top with barbed prickles.