Scientific Name:
Pentapogon aucklandicus (Hook.f.) de Lange & L.M.H.Schmid, Ukr. Bot. J. 79: 75 (2022)
  • Agrostis aucklandica Hook.f., Bot. Antarct. Voy. I. (Fl. Antarct.) Part I, 96 (1845)
  • Deyeuxia filiformis var. aucklandica (Hook.f.) Zotov, Trans. Roy. Soc. New Zealand 73: 235 (1943) nom. illeg.
  • Deyeuxia aucklandica (Hook.f.) Zotov, Rec. Domin. Mus. 5: 139 (1965)
  • = Deyeuxia setifolia Hook.f., Bot. Antarct. Voy. II. (Fl. Nov.-Zel.) Part I, 299, t. 65B (1853)
  • Agrostis setifolia (Hook.f.) Hook.f., Handb. New Zealand Fl. 329 (1864)
  • Calamagrostis setifolia (Hook.f.) Cockayne, Rep. Bot. Survey Tongariro Natl. Park 35 (1908)

Open to dense, stiff tufts or small tussocks, 6–35–(55) cm; branching extravaginal. Leaf-sheath subcoriaceous, distinctly ribbed, smooth, or sparsely scabrid to densely scaberulous between ribs, light green to light brown, rarely purplish. Ligule 0.5–2 mm, truncate, abaxially smooth or rarely sparsely minutely hairy or scabrid. Leaf-blade 2.5–15 cm × 0.3–1.5 mm, folded with inrolled margins, setaceous to filiform or wiry, abaxially smooth, or rarely scabrid, adaxially scabrid on ribs, margins sparsely scabrid, narrowed to blunt tip. Culm 4–35 cm, erect or curved, sometimes geniculate at base, nodes usually inconspicuous, internodes either distinctly scabrid below panicle (most North Id plants), to slightly scabrid near panicle or completely smooth. Panicle 2–5.5–(11) cm × (2)–3–18–(22) mm, ± loosely spiciform, narrowly branched, widest at anthesis, later becoming contracted; rachis, branches and pedicels densely scabrid, or rachis smooth and branches scabrid or smooth. Spikelets 3–5.5 mm, greenish or purplish, becoming pale brown. Glumes 1–3-nerved, linear- to elliptic-lanceolate, acute, membranous, often scabrid near tip and on midnerve above. Lemma (2)–2.4–3.8 mm, usually ± ¾ length of glumes, submembranous, smooth to finely papillose, sometimes finely scabrid above, ovate-lanceolate, apex hyaline, truncate, denticulate; awn 2–4.5 mm, usually stout and reflexed, projecting from between glumes, occasionally slightly twisted at base, from upper ⅓ of lemma or c. middorsal. Palea ˜ lemma, keels scabrid in upper ½, interkeel sometimes sparsely scabrid, apex obtuse or bifid. Callus hairs rather dense, 1.5–2.5 mm, c. ½-⅔ length of lemma, very rarely = lemma. Rachilla prolongation 1–1.5 mm, tipped by a strong tuft of hairs 1–2 mm reaching lemma apex or slightly overtopping lemma. Lodicules 0.6–1 mm, lanceolate, subacute. Anthers 0.6–1.4 mm. Caryopsis 1.6–2.2 × 0.4–0.9 mm.

[From: Edgar and Connor (2000) Flora of New Zealand. Volume 5 (second printing). as Deyeuxia aucklandica (Hook.f.) Zotov]

Indigenous (Endemic)
Cockayne, L. 1908: Report on a Botanical Survey of the Tongariro National Park. Government Printer, Wellington.
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. [as Deyeuxia aucklandica (Hook.f.) Zotov] [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. [as Deyeuxia aucklandica (Hook.f.) Zotov] [Not Threatened]
Edgar, E. 1995: New Zealand species of Deyeuxia P.Beauv. and Lachnagrostis Trin. (Graminieae: Aveneae)*. New Zealand Journal of Botany 33: 1–33. [as Agrostis aucklandica Hook.f.; Agrostis setifolia (Hook.f.) Hook.f.; Calamagrostis setifolia (Hook.f.) Cockayne; Deyeuxia aucklandica (Hook.f.) Zotov; Deyeuxia filiformis var. aucklandica (Hook.f.) Zotov; Deyeuxia setifolia Hook.f.]
Hooker, J.D. 1844–1845: 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. I. Flora Antarctica. Part I. Botany of Lord Auckland’s Group and Campbell’s Island. Reeve, Brothers, London.
Hooker, J.D. 1852–1853 ("1853"): 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. II. Flora Novae-Zelandiae. Part I. Flowering plants. Lovell Reeve, London.
Hooker, J.D. 1864: Handbook of the New Zealand Flora: a systematic description of the native plants of New Zealand and the Chatham, Kermadec's, Lord Auckland's, Campbell's and Macquarie's Islands. Part I. Reeve, London.
Zotov, V.D. 1943: Certain Changes in the Nomenclature of New Zealand Species of Gramineae. Transactions of the Royal Society of New Zealand 73: 233–238.
Zotov, V.D. 1965: Grasses of the Subantarctic Islands of the New Zealand Region. Records of the Dominion Museum, Wellington 5: 101–146.