Deyeuxia appressa

Deyeuxia appressa Vickery. Contr. New South Wales Natl. Herb. 1: 54 (1940).

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

Type of Basionym or Protologue Information: IT: J. Vickery 102A, 9 Nov 1930, Australia: New South Wales, George's River, Herne Bay (K, SYD, US-1816916 (culm ex SYD)).

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 (200), [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae 2 (201).

Illustrations: [2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales, 4th edn (200).

Habit. Perennial. Culms erect, 90 cm tall, 5 -noded. Mid-culm nodes glabrous. Lateral branches simple. Leaves mostly basal. Leaf-sheaths hairy. Ligule an eciliate membrane, 1–2 mm long, membranous, abaxially hairy, lacerate, truncate. Leaf-blades linear, flat or involute, 10–30 cm long, 2–4 mm wide. Leaf-blade surface scabrous, indumented.

Inflorescence. Inflorescence compound, a panicle. Panicle linear or lanceolate or oblong or ovate, 20–30 cm long.

Spikelets. Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile floret(s), without rachilla extension or with a barren rachilla extension, lanceolate, laterally compressed, 3.5–4.5 mm long.

Glumes. Glumes similar, firmer than fertile lemma. Lower glume lanceolate, membranous, keeled, 1-keeled, 1 -nerved. Upper glume lanceolate, membranous, keeled, 1-keeled, 1 -nerved. Upper glume surface asperulous.

Florets. Fertile lemma 4.5 mm long, without keel, 5 -nerved. Lemma apex dentate, awned, 1 -awned. Median (principal) awn dorsal, 5 mm long overall, without a column. Lodicules present. Anthers 3.

Continental Distribution: Australasia.

Australian Distribution: New South Wales.

New South Wales: Central Coast.

Notes. Endemic. In the Hornsby area of N.S.W. On wet ground. 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