Acaena L.

Calyx with barbed prickles Acaena
Flowers in long interrupted spikes or in heads with further flowers on the peduncle below the head. Tufted herbs without stolons (except sometimes in A. x anserovina)
Flowers in long interrupted spikes. Plants never stoloniferous
Leaflets glabrous on upper surface or nearly so, with some hairs on main veins underneath, ovate to oblong, 4–23 mm long, serrate. Stamens 2–8. Calyx prickles several with 3–8 longer than the rest, thickened basally and forming longitudinal ridges. Blue Mts Grasslands and forests Acaena echinatasubglabricalyx
Leaflets densely evenly villous underneath, less so on upper surface