Classification
 Nomenclature
Scientific Name:
Stenostachys gracilis (Hook.f.) Connor, New Zealand J. Bot. 32: 146 (1994)
Synonymy:
  • Gymnostichum gracile Hook.f., Bot. Antarct. Voy. II. (Fl. Nov.-Zel.) Part I, 312, t.70 (1853)
  • Hystrix gracilis (Hook.f.) Kuntze, Revis. Gen. Pl. 2, 778 (1891)
  • Asprella gracilis (Hook.f.) Kirk, Trans. New Zealand Inst. 27: 353 (1895)
  • Cockaynea gracilis (Hook.f.) Zotov, Trans. Roy. Soc. New Zealand 73: 234 (1943) nom. illeg.
  • = Stenostachys narduroides Turcz. (1862)
  • Elymus narduroides (Turcz.) A.Löve & Connor, New Zealand J. Bot. 20: 184 (1982)
  • = Agropyron subeglume P.Candargy (1901)
 Description

Perennial stoloniferous grass forming open, wide and flat- leaved patches with narrow nodding inflorescences; often quite stout in forests. Leaf-sheath 5–15 cm, with long (0.5–1 mm) hairs irregularly retrorse or erect, occasionally few or glabrous. Auricles to 0.5 mm or minute, scarcely clasping. Ligule 0.3–1 mm, erose. Leaf-blade 10–20 cm × 1.5–2 mm, flat, thin, usually with hairs 0.5–1 mm or with sparse short prickle-teeth adaxially and glabrous abaxially; margins glabrous. Culm 70–100 cm, slender, nodes evident sometimes ± geniculate, internodes glabrous. Inflorescence slender, narrow, 10–20 cm, of 15–30 spikelets > internodes; internodes 2–5 mm but longer at base; rachis prolongation 2–6 mm. Spikelets to 10 mm, of 1–2–3 florets, on 1–1.5 mm stipes in the absence of glumes; rachilla prolongation 1.5–3 mm, conspicuously short stiff hairy. Glumes usually 0, sometimes 1 or 2 and awn-like, 0–2–3 mm, very occasionally 5–6 mm above, 1-nerved, prickle-toothed, « spikelets. Lemma 7–10 mm, prickle-teeth abundant, weakly keeled, infrequently bifid at apex, canaliculate above and tapering to awn 1.5–6 mm. Palea 5–7 mm, < lemma, apex usually produced but sometimes retuse; keels toothed and usually inrolled. Callus short, 0.5 mm, surrounded by abundant short stiff hairs; disarticulation ± oblique. Rachilla 1.5–2.5 mm, shortly prickle-toothed. Lodicules 0.75–1 mm. Anthers 1.5–2 mm, often retained on apex of caryopsis. Gynoecium: ovary 1.25–1.4 mm; stigma-styles 1.5–2 mm. Caryopsis 4–4.25 mm; embryo 1–1.2 mm. Chasmogamous and commonly cleistogamous. 2n= 28.

[From: Edgar and Connor (2000) Flora of New Zealand. Volume 5 (second printing).]

 Biostatus
Indigenous (Endemic)
 Bibliography
Barkworth, M.E.; Jacobs, S.W.L. 2011: The Triticeae (Gramineae) in Australasia. Telopea 13(1-2): 37–56.
Connor, H.E. 1994: Indigenous New Zealand Triticeae: Gramineae. New Zealand Journal of Botany 32: 125–154.
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. [Data deficient]
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. [Not Threatened]
Edgar, E.; Connor, H.E. 2010: Flora of New Zealand Volume V Grasses. Edition 2. Manaaki Whenua Press.
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.
Kirk, T. 1895: Description of New Grasses from Macquarie Island. Transactions of the New Zealand Institute 27: 353–354.
Kuntze, C.E.O. 1891: Revisio Generum Plantarum. Vol. 2. Arthur Felix, Leipzig.
Löve, Á.; Connor, H. E. 1982: Relationships and taxonomy of New Zealand wheatgrasses. New Zealand Journal of Botany 20: 169–186.
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.