Classification
 Nomenclature
Scientific Name:
Acaena minor (Hook.f.) Allan, Fl. New Zealand 1, 363 (1961)
Synonymy:
  • Acaena sanguisorbae var. minor Hook.f., Bot. Antarct. Voy. I. (Fl. Antarct.) Part I, 9 (1844)
Vernacular Name(s):
Antarctic piripiri; bidibid; piripiri
 Description

Stoloniferous perennial; prostrate, trailing stems 2–3.5 mm diam., < 50 cm long; erect stems 1–2 mm diam., 5–15 cm long. Lvs 1–15 cm long; stipules entire or 2–3-fid; leaflets 7–15, conduplicate, obovate (), or oblong (), 3–20 × 2–10 mm, 6–15-toothed, glaucous and glabrous on upper surface, paler and sparsely to densely hairy on lower surface; teeth conspicuously penicillate. Scape 0.5–2 cm long at flowering, 2–7 cm long at fruiting, pilose; capitulum 6–8 mm diam. at flowering, 1–2 cm diam. (including spines) at fruiting; florets c. 40–50 (), or c. 100–130 (); sepals 4; stamens 2; anthers dark red; style 1, white; achene 1. Fr. obconic, c. 3 × 1.5 mm (), or c. 4 × 1.5 mm (), hairy; spines 4, red or yellow, 6–12 mm long, barbed.

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

 Biostatus
Indigenous (Endemic)
Number of subspecific taxa in New Zealand within Acaena minor (Hook.f.) Allan
CategoryNumber
Indigenous (Endemic)2
Total2
 Phenology

Flowering: Nov.–Jan.; Fruiting: Jan.–Mar.

 Bibliography
de Lange, P.J.; Norton, D.A.; Heenan, P.B.; Courtney, S.P.; Molloy, B.P.J.; Ogle, C.C.; Rance, B.D. 2004: Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42(1): 45–76.
Hooker, J.D. 1844–1845: The Botany of the Antarctic Voyage of H.M. Discovery Ships Erebus and Terror in the Years 1839–1843, under the command of Captain Sir James Clark Ross. I. Flora Antarctica. Part I. Botany of Lord Auckland’s Group and Campbell’s Island. Reeve, Brothers, London.