Classification
Class
Magnoliopsida Brongn.
Order
Poales Small
Family
Gramineae Juss.
Genus
Bromus L.
 Nomenclature
Scientific Name:
Bromus arenarius Labill., Nov. Holl. Pl. 1, 23, t. 28 (1805)
 Description

Annuals, 20–80 cm, loosely tufted or consisting of a solitary culm, basal leaves withering early. Leaf-sheath densely villous. Ligule 1–2.6 mm, lacerate. Leaf-blade 7–30 cm × 1.7–5 mm, densely villous, hairs shorter near acute tip. Culm 15–60 cm, erect or geniculate-ascending, internodes ± pubescent below panicle. Panicle 7–26 cm, lax, nodding; branches filiform, curving, short-hairy. Spikelets 3–4 cm, 5–8-flowered, loosely hairy, oblong-lanceolate to wedge-shaped. Glumes unequal, acute to acuminate, chartaceous, with long fine hairs; lower 7.2–9.5 mm, 3-nerved, narrow oblong-lanceolate, upper 9.5–13 mm, 5–7-nerved, narrow elliptic-lanceolate. Lemma 11–14 mm, 7–9-nerved, rounded, chartaceous, oblong- to narrowly elliptic-lanceolate, with long fine hairs; apex hyaline, sometimes entire or with 2 acute lobes c. 0.5 mm; awn 14–20 mm, arising c. 2 mm below apex of lemma or at base of sinus. Palea c. ¾ length of lemma, keels sparsely long-ciliate, interkeel glabrous. Callus with minute hairs. Rachilla 1.2 mm, shortly pubescent. Anthers 0.8–1.5 mm. Caryopsis 7.5–8 × 1.3–1.6 mm.

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

 Biostatus
Indigenous (Non-endemic)
 Bibliography
Connor, H.E. 1988: Breeding systems in New Zealand grasses. 10, Species at risk for conservation. New Zealand Journal of Botany 26: 163–167.
de Lange, P.J.; Gardner, R.O.; Sykes, W.R.; Crowcroft, G.M.; Cameron, E.K.; Stalker, F.; Christian, M.L.; Braggins, J.E. 2005: Vascular flora of Norfolk Island: some additions and taxonomic notes. New Zealand Journal of Botany 43(2): 563–596.
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]
Edgar, E.; Connor, H.E. 2010: Flora of New Zealand Volume V Grasses. Edition 2. Manaaki Whenua Press.
Forde, M.B.; Edgar, E. 1995: Checklist of Pooid grasses naturalised in New Zealand. 3. Tribes Bromeae and Brachypodieae. New Zealand Journal of Botany 33(1): 35–42.
Labillardière, J.J.H. de 1805: Novae Hollandiae Plantarum Specimen. Vol. 1. Part 2-4. Paris, Huzard.
Murray, B.G.; de Lange, P.J.; Ferguson, A.R. 2005: Nuclear DNA variation, chromosome numbers and polyploidy in the endemic and indigenous grass flora of New Zealand . Annals of Botany 96: 1293–1305.