Deyeuxia acuminata

Deyeuxia acuminata Vickery. Contr. New South Wales Natl. Herb. 1: 73 (1940).

Classification. (GPWG 2001) : Subfamily Pooideae. Tribe Poeae.

Type of Basionym or Protologue Information: Australia, Guyra:  McKie 658 (K holo.

Key references (books and floras): [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of Australia, [2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses of New South Wales (199), [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae 2 (207).

Illustrations: [2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales, 4th edn (199).

Habit. Perennial. Culms erect, stature robust to moderate, 100 cm tall, firm, 5 -noded. Mid-culm nodes glabrous. Leaves cauline. Leaf-sheaths scaberulous. Ligule an eciliate membrane, 4–8 mm long, membranous, abaxially hairy, lacerate, truncate. Leaf-blades linear, 15–30 cm long, 2–5 mm wide. Leaf-blade surface scaberulous or scabrous, indumented.

Inflorescence. Inflorescence compound, a panicle. Panicle lanceolate or ovate, 20–40 cm long, with spikelets clustered towards branch tips.

Spikelets. Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile floret(s), with a barren rachilla extension, lanceolate, laterally compressed, 5–5.5 mm long.

Glumes. Glumes similar, firmer than fertile lemma. Lower glume lanceolate, membranous, much thinner on margins, keeled, 1-keeled, 1 -nerved. Upper glume lanceolate, 3–4 mm long, membranous, keeled, 1-keeled, 1 -nerved. Upper glume surface asperulous.

Florets. Fertile lemma 5–5.5 mm long, without keel, 5 -nerved. Lemma apex awned, 1 -awned. Median (principal) awn subapical, 1–1.5 mm long overall. Lodicules present. Anthers 3.

Continental Distribution: Australasia.

Australian Distribution: New South Wales.

New South Wales: Northern Tablelands.

Notes. Endemic. Northern tablelands of N.S.W. Grows in woodland in hilly country. Flowers spring.

AVH 2011

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith