Class
Order
Family
Genus
Classification
Nomenclature
Scientific Name:
Isolepis praetextata (Edgar) Soják, 148 (1980 [1978])
Synonymy:
- ≡ Scirpus praetextatus Edgar, New Zealand J. Bot. 4: 196 (1966)
Description
Thickly tufted, often prostrate or drooping, from a slender ascending rhizome c. 0.5 mm. diam. Culms 3–30 cm. × 0.5–1 mm., rather lax; 1–2 basal bracts per culm, membr., grey-brown or sometimes red-purple. Lvs (1)–2–3–(4), < or ± = culms, < 1 mm. wide, sheath often streaked with red-purple. Infl. apparently lateral, c. (3)–4–5 × (3) –5–9 mm., us. almost semicircular in outline, of 2–5 ovate, obtuse, close-packed spikelets; subtending bract much > infl., up to 10 cm. long, rigid, as wide as a foliage lf, red-purple at base, occ. a second shorter bract present. Spikelets deep red-purple, almost black, at base, distally green at first but turning grey-brown; at times entirely grey-green. Glumes 2–2.5 mm. long, lanceolate, acute, membr., tinged with red-purple, keel very thick, green, slightly excurrent. Hypog. bristles 0. Stamens 2–1, rarely 3 in lower glumes. Style-branches 3. Nut c. 1 × 0.5 mm., c. ½ length of glume, trigonous with angles slightly thickened, elliptical, smooth, pale cream, shortly stipitate and apiculate.
[From: Moore and Edgar (1970) Flora of New Zealand. Volume 2 as Scirpus praetextatus Edgar]
Biostatus
Indigenous (Endemic)
Bibliography
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. No. 22. [Not Threatened]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [Data Deficient]
Edgar, E. 1966: Two new species of Scirpus sect. Isolepis. New Zealand Journal of Botany 4: 196–200.
Muasya, A.M.; Simpson, D.A. 2002: A monograph of the genus Isolepis R.Br. (Cyperaceae). Kew Bulletin 57(2): 257–362.
Soják, J. 1979: Fragmenta phytotaxonomica et nomenclatorica. 2. Casopis Narodniho Musea. Oddil Prirodovedny. Prague 148: 193–209.
