Classification
Class
Magnoliopsida Brongn.
Order
Poales Small
Family
Cyperaceae Juss.
Genus
Isolepis R.Br.
 Nomenclature
Scientific Name:
Isolepis crassiuscula Hook.f., Bot. Antarct. Voy. III. (Fl. Tasman.) Part II, 86, t. 143 (1858)
Synonymy:
  • ≡ Scirpus crassiusculus (Hook.f.) Benth., Fl. Austral. 7, 326 (1878)
  • = Scirpus pseudo-fluitans Makino (1905)
  • ≡ Scirpus fluitans subsp. pseudo-fluitans (Makino) T.Koyama (1958)
 Description

Rhizome much elongated, branched and rooting at the nodes. Culms (2)–4–8–(15) cm. long, slightly < 1 mm. diam., rigid, erect, us. lfy. Lvs 4–6 cm. long, slightly < 1 mm. wide, <, = or > culms, narrow-linear, lamina flattened, tip subobtuse; lowermost lf on branch bract-like with pale membr. sheath to 4 mm. wide. Infl. a solitary spikelet, or very rarely 2, terminal and appearing so, pale green, flecked with red; subtending bract 0. Spikelets (3)–5.5–6.5–(8) × (2)–3–5 mm., oblong or ovoid. Glumes 2–4 mm. long, broadly ovate, obtuse, finely nerved, green at the centre, red-purple towards the margins. Hypog. bristles 0. Stamens 3. Style-branches 2. Nut c. 1.5 × 1 mm., obovate, much compressed, margins slightly thickened, minutely apiculate, grey.

[From: Moore and Edgar (1970) Flora of New Zealand. Volume 2 as Scirpus crassiusculus (Hook.f.) Benth.]

 Biostatus
Indigenous (Non-endemic)
 Bibliography
Bentham, G. 1878: Flora Australiensis. Vol. 7. Reeve, London.
de Lange, P.J.; Norton, D.A.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Hitchmough, R.; Townsend, A.J. 2009: Threatened and uncommon plants of New Zealand (2008 revision). New Zealand Journal of Botany 47: 61–96. [Not threatened]
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.
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. [Naturally Uncommon]
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. [Naturally Uncommon]
Hooker, J.D. 1858–1859: 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. III. Flora Tasmaniae. Part II. Monocotyledones and acotyledones. Lovell Reeve, London.
Muasya, A.M.; Simpson, D.A. 2002: A monograph of the genus Isolepis R.Br. (Cyperaceae). Kew Bulletin 57(2): 257–362.