Scientific Name:
Acaena Mutis ex L., Mant. Pl. 145, 200 (1771)
Vernacular Name(s):
bidibid; piripiri

Perennial herbs or dwarf shrubs, often prostrate and forming large mats.  Lvs imparipinnate;  leaflets toothed;  stipules adnate to petiole, persistent.  Infl. terminal or axillary, capitate or spicate.  Fls 3–5-merous, small, ☿ or ♀.  Hypanthium deeply concave, contracted at mouth.  Epicalyx 0.  Calyx of 3–5 sepals.  Petals 0.  Stamens 1–10.  Ovary superior, surrounded by the hypanthium.  Styles 1–2.  Ovules 1–2.  Fr. of 1–2 achenes enclosed in dry hypanthium bearing 4 or more, often barbed, spines, or without spines.

[From:  Webb et al. (1988) Flora of New Zealand. Volume 4.]

Indigenous (Non-endemic)
Number of species in New Zealand within Acaena Mutis ex L.
Indigenous (Endemic)14
Indigenous (Non-endemic)3
Exotic: Fully Naturalised1
Exotic: Casual1