Carex appressa R.Br. var. sectoides Kük.; Carex secta Boot var. sectoides (Kük.) Cheeseman
Vascular – Native
2n = c.64-68
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) – 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.
Please note, threat classifications are often suggested by authors when publications fall between NZTCS assessment periods – an interim threat classification status has not been assessed by the NZTCS panel.
- Conservation status of New Zealand indigenous vascular plants, 2017 . 2018. 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. Department of Conservation. Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2017 | At Risk – Naturally Uncommon | Qualifiers: RR
Previous conservation statuses
2012 | At Risk – Naturally Uncommon | Qualifiers: RR
2009 | Not Threatened
2004 | Not Threatened
Endemic. Chatham and Antipodes Island groups.
Widespread along stream, lake and pond margins and in seepages, flushes, and around shallow ephemeral pools. Usually in open, well lighted situations but also may be fringing streams running through successional forest.
Wetland plant indicator status rating
OBL: Obligate Wetland
Almost always is a hydrophyte, rarely in uplands (non-wetlands).
Robust, tussock forming sedge up to 2 x 1 m, arising from a stout trunk-like base (comprised of densely interwoven former roots) up to 1 m tall. Culms 0.15-1.8 m x 2-3 mm, triquetrous, margins razor sharp, scabrid, robust, curved over toward apices; basal sheaths grey-brown. Leaves = to or < culms, 5-8 mm wide, deeply channelled, with strongly scarbid, razor-sharp margins. Inflorescence a broad, heavy, greyish-brown to brown panicle 70-80 mm long, with numerous stiff, crowded branchlets up to 40 mm long, the lowermost usually distant. Spikes numerous, more or less sessile, red-brown, 4-5-flowered, male flowers at apex. Glumes > utricles, ovate-lanceolate, acute or lower glumes of spike awned, brownish-hyaline, faintly nerved, with a paler brown thickened midrib. Utricles 2.5-3.8 x 1-1.8 mm, unequally biconvex, elliptic-ovoid, smooth on curved face, very faintly nerved on the flatter face, light yellow-brown, later dark brown, more or less shining; beak 1 mm long, strongly bifid, with green, winged, strongly scabrid on margins; stipe 0.5 mm long. Stigmas 2. Nut slightly < 2 mm long, biconvex, narrow-obovoid, pale grey, greyish-white to white.
Allied to C. secta Boott from which it differs by its much larger, stouter over all habit, and denser more rigid, crowded inflorescences with shorter branchlets. On Chatham (Rekohu) Island C. sectoides is symaptric with C. secta.
September - December
December - June
Nuts surrounded by inflated utricles are dispersed by granivory and wind (Thorsen et al., 2009).
Easily grown from fresh seed and rooted pieces. Prefers cool climate and does best in standing water. Does not tolerate humidity or drought. On account of the very sharp leaf and culm margins care is needed when handling this sedge.
carex: Latin name for a species of sedge, now applied to the whole group.
Where To Buy
Not commercially available
Fact Sheet prepared by P.J. de Lange (10 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.
Thorsen, M. J.; Dickinson, K. J. M.; Seddon, P. J. 2009. Seed dispersal systems in the New Zealand flora. Perspectives in Plant Ecology, Evolution and Systematics 2009 Vol. 11 No. 4 pp. 285-309
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Carex sectoides Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/carex-sectoides/ (Date website was queried)