Deyeuxia angustifolia

Deyeuxia angustifolia Vickery. Contr. New South Wales Natl. Herb. 1: 67 (1940).

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

Type of Basionym or Protologue Information: Australia, Blue Mts., Wentworth Falls: Vickery K32 (K holo, CANB, NSW).

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 slender to delicate, 30–70 cm tall, 4 -noded. Mid-culm internodes glabrous. Mid-culm nodes glabrous. Lateral branches simple. Leaves mostly basal. Leaf-sheaths scaberulous. Ligule an eciliate membrane, 1–2 mm long, membranous, abaxially scaberulous, truncate. Leaf-blades involute or convolute, 15–30 cm long, 1–4 mm wide. Leaf-blade surface scabrous, indumented.

Inflorescence. Inflorescence compound, a panicle. Panicle linear or oblong, loose, 1–9 cm long, 0.4–0.7 cm wide.

Spikelets. Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile floret(s), with a barren rachilla extension, lanceolate, laterally compressed, 3–5 mm long.

Glumes. Glumes similar, similar to fertile lemma in texture. Lower glume lanceolate, chartaceous, keeled, 1-keeled, 1 -nerved. Upper glume lanceolate, 4–5 mm long, chartaceous, keeled, 1-keeled, 1 -nerved. Upper glume surface asperulous.

Florets. Fertile lemma 4–5 mm long, without keel, 5–7 -nerved. Lemma apex entire or dentate, awned, 1 -awned. Median (principal) awn subapical, 1 mm long overall. Lodicules present. Anthers 3.

Continental Distribution: Australasia.

Australian Distribution: New South Wales.

New South Wales: Central Tablelands, Southern Tablelands.

Notes. Endemic. N.S.W. and A.C.T. Usually in sclerophyll forest, in gullies and crevices, also in swamps. Flowers spring-summer.

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