Subantarctic hook grass
Uncinia aucklandica Hamlin
Vascular – Native
The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database.
2n = 88
Current conservation status
The threat classification status of all known New Zealand vascular plant taxa at the rank of species and below were reassessed in 2017 using the New Zealand Threat Classification System (NZTCS) – more information about this can be found on the NZTCS website This report includes a statistical summary and brief notes on changes since 2012 and replaces all previous NZTCS lists for vascular plants. Authors: By Peter J. de Lange, Jeremy R. Rolfe, John W. Barkla, Shannel P. Courtney, Paul D. Champion, Leon R. Perrie, Sarah M. Beadel, Kerry A. Ford, Ilse Breitwieser, Ines Schönberger, Rowan Hindmarsh-Walls, Peter B. Heenan and Kate Ladley. Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – a suggested threat classification status has not been assessed by the NZTCS panel.
2017 | At Risk – Naturally Uncommon | Qualifiers: DP, RR
Previous conservation statuses
2012 | At Risk – Naturally Uncommon | Qualifiers: DP, RR
2009 | At Risk – Naturally Uncommon
2004 | Not Threatened
Endemic. New Zealand: South (South Otago, Fiordland), Stewart, Auckland and Campbell Islands
forest and shrubland from sea level to 900 m a.s.l. Occasionally extending into tussock grassland (Poa/Chionochloa) where it has been found sympatric with U. hookeri on the Auckland and Campbell Islands
Slender tufts, shoots < 1mm diameter at base (including sheaths), often rather distant from an ascending rhizome < 1 mm diameter. Culms 50-400 mm long, much < 0.5 mm diameter, glabrous; basal bracts dull, dark reddish brown. Leaves 4–7 per culm, ± = culms, 0.5–1 mm wide, yellow-green, scabrid on margins and adaxial surface towards the long filiform tip. Spikes 25-50 × 2-3 mm, occasionally bracteate, female flowers c. 10-20, internodes to 5 mm long at base of spike, 1.5-2.0 mm long above. Glumes = or slightly < utricles, deciduous, ovate-lanceolate, subacute, membranous, pale cream or brown with a green midrib. Utricles 5-6 mm long, slightly < 1 mm diameter, plano-convex or subtrigonous to trigonous, narrow oblong-lanceolate, light green, shining, nerved but often very faintly so on the two abaxial surfaces, usually erect when ripe, slightly narrowed to a stipe 1.0-1.5 mm long, beak gradually tapered, only slightly narrower than utricle, 1.0-1.5 mm long
Carex aucklandica is closely allied to C. erebus K.A.Ford from which it chiefly differs by its weakly stoloniferous, less markedly tussock-forming growth habit, narrower leaves and spikes, and by the lighter coloured, mature utricles which remaining tightly clasping the inflorescence axis rather than spreading widely.
November - December
December - February
Easily grown from fresh seed and by the division of established plants (though these may then take a while to settle). Prefers a shaded site, and should be planted within a deep, rich, free draining but permanently moist soil
carex: Latin name for a species of sedge, now applied to the whole group.
aucklandica: Of the Auckland Islands
Where To Buy
Not Commercially Available
Description adapted from Moore and Edgar (1970). Fact sheet prepared by Peter J. de Lange 17 August 2006.
References and further reading
Moore, L.B.; Edgar, E. 1970: Flora of New Zealand. Vol. II. Government Printer, Wellington.
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Carex aucklandica Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/carex-aucklandica/ (Date website was queried)