Carex egmontiana
Common name
bastard grass, hook sedge
Synonyms
Uncinia egmontiana Hamlin, Uncinia sivestris var. squamata Hamlin
Family
Cyperaceae
Flora category
Vascular – Native
Endemic taxon
Yes
Endemic genus
No
Endemic family
No
Structural class
Sedges
NVS code
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.
UNCEGM
Chromosome number
2n = 88
Current conservation status
The conservation 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). 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.
2012 | Not Threatened
Previous conservation statuses
2009 | Not Threatened
2004 | Not Threatened
Distribution
Endemic. New Zealand: North Island (Mt Egmont), South and Stewart Islands – apparently absent from Fiordland.
Habitat
Coastal to alpine. In coastal turf, tussock grassland, alpine mires, bogs and shrubland overlying peat.
Features
Densely caespitose, dull red or reddish-green (rarely green) plants, 250-400 mm tall. Culms c.300.0 × c. 0.5 mm, glabrous, subtrigonous or almost terete; basal sheaths straw-coloured or light brown. Leaves 4–6 per culm, culms, 1.0-1.5 mm wide, moderately scabrid on margins and upper surface. Spikes 3.5-120.0 × c.3 mm, female flowers c.10–20, rather distant, internodes to 12 mm long at base of spike, c.3 mm long above. Glumes = or >, or rarely slightly < utricles, persistent, ovate-lanceolate, acute, membranous, red or green with pale hyaline margins. Utricles 4.5-6.0 × c.1.0 mm, subtrigonous, elliptic-lanceolate, striated or scarcely nerved, grey-green or reddish grey, contracted below to a stipe usually slightly > 1.5 mm long, narrowed above to a beak slightly < 1.5 mm long
Similar taxa
From those other Carices with hooked utricles and persistent glumes, with the exceptions of C. silvestris (Hamlin) K.A.Ford and C. strictissima (Petrie) K.A.Ford, C. egmontiana can be distinguished from by having glabrous, semi-terete culms. Carex silvestris differs by its bright green rather than usually dull red or reddish green leaves, few-nerved, smaller utricles (< 4.5 mm cf. > 5 mm long) which are green rather than grey-green or reddish grey.
Flowering
October - November
Fruiting
November - August
Propagation technique
Easily grown from fresh seed and by division of established plants. Prefers a permanently moist, peaty soil but will grow in most substrates. Except in cool climates this species is best planted in semi-shade.
Etymology
carex: Latin name for a species of sedge, now applied to the whole group.
egmontiana: Of Mount Egmont
Attribution
Fact sheet prepared fro NZPCN by Peter J. de Lange 17 August 2006. Description adapted from Moore and Edgar (1970).
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 egmontiana Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/carex-egmontiana/ (Date website was queried)