Scientific Name:
Pentapogon inaequiglumis (Hack. ex Cheeseman) P.M.Peterson, Romasch. & Soreng in Peterson et al., J. Syst. Evol. 60: 18 (online) (2022)
  • Dichelachne sciurea var. inaequiglumis Hack. in Cheeseman, Man. New Zealand Fl. 874 (1906)
  • Dichelachne micrantha var. inaequiglumis (Hack.) Domin, Biblioth. Bot. 85: 353 (1915)
  • Dichelachne inaequiglumis (Hack.) Edgar & Connor, New Zealand J. Bot. 20: 307 (1982)

Rather small, slender extravaginal tufts, leaves « culms. Leaf-sheath dull or light brown, glabrous or minutely scabrid below collar, or lowermost sheaths scabrid throughout, sometimes with scattered hairs. Ligule 0.1–0.5 mm, membranous, truncate, ciliate, abaxially minutely scabrid. Leaf-blade to 15 cm × 1–2.5 mm, flat, tapered; margins minutely scabrid towards tip, occasionally both, or only adaxial, surface with short hairs, adaxially ribs scabrid. Culm 25–70 cm, internodes entirely glabrous, or slightly and minutely scabrid below purplish nodes. Panicle 10–30 cm, lax; branches few, slender, in ± distant whorls, naked below; rachis, branchlets and pedicels short-scabrid, visible between spikelets. Spikelets purple, few. Glumes elliptic-lanceolate, acute; lower (2.5)–3–3.5–(4.5) mm, < lemma, upper (3.5)–4–5–(5.5) mm, ≤ or rarely > lemma. Lemma 4–6 mm, minutely scabrid, tip shortly bifid; awn 13.5–18.5 mm, purple, inserted c. 0.5 mm below lemma tip, column ± straight, awn twisting 2–3 times. Palea 3.5–4 mm, narrow-linear, keels scabrid near ciliate tip. Callus hairs (0.5)-c. 1 mm. Rachilla prolongation to 0.2 mm. Lodicules 0.4–0.7 mm, cuneate, somewhat bilobed with a few apical hairs. Anthers 3, (0.9)–1.0–1.5–(2.5) mm in chasmogamous flowers, (0.1)–0.2–0.7 mm in cleistogamous flowers. Caryopsis 2–2.5 × 0.3–0.4 mm; embryo 0.2–0.4 mm; hilum 1.8–2.3 mm.

[From: Edgar and Connor (2000) Flora of New Zealand. Volume 5 (second printing). as Dichelachne inaequiglumis (Hack.) Edgar & Connor]

Indigenous (Non-endemic)
Cheeseman, T.F. 1906: Manual of the New Zealand Flora. Government Printer, Wellington.
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. [as Dichelachne inaequiglumis (Hack.) Edgar & Connor] [Naturally uncommon]
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 Dichelachne inaequiglumis (Hack.) Edgar & Connor] [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. [as Dichelachne inaequiglumis (Hack.) Edgar & Connor] [Naturally Uncommon]
Domin, K. 1915: Beiträge zur Flora und Pflanzengeographie Australiens. Bibliotheca Botanica 85: 1–551.
Edgar, E.; Connor, H. E. 1982: Dichelachne (Gramineae) in New Zealand. New Zealand Journal of Botany 20: 303–309.
Peterson, P.M.; Soreng, R.J.; Romaschenko, K.; Barberá, P.; Quintanar, A.; Aedo, C.; Saarela, J.M. 2022: Phylogeny and biogeography of Calamagrostis (Poaceae: Pooideae: Poeae: Agrostidinae), description of a new genus, Condilorachia (Calothecinae), and expansion of Greeneochloa and Pentapogon (Echinopogoninae). Journal of Systematics and Evolution 60(3): 570–590. (Published online: May 2022)