Deyeuxia imbricata

Deyeuxia imbricata Vickery. Contr. New South Wales Natl. Herb. 1: 55 (1940).

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

Type of Basionym or Protologue Information: Australia, Glen Innes:  Vickery K36 (K holo, 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 (202), [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae 2 (202).

Illustrations: [2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales, 4th edn (202).

Habit. Perennial. Culms erect, 80–120 cm tall, 3–4 -noded. Mid-culm nodes glabrous. Lateral branches simple. Leaves mostly basal. Leaf-sheaths scaberulous, glabrous on surface. Ligule an eciliate membrane, 3–6 mm long, membranous, erose, truncate. Leaf-blades linear, 15–30 cm long, 2–4.5 mm wide. Leaf-blade surface scaberulous or scabrous.

Inflorescence. Inflorescence solid, a panicle. Panicle linear or elliptic or oblong, dense, 2.5–15 cm long, 0.6–1.5 cm wide.

Spikelets. Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile floret(s), without rachilla extension or with a barren rachilla extension, elliptic, laterally compressed, 2–3.5 mm long.

Glumes. Glumes similar, similar to fertile lemma in texture. Lower glume lanceolate, membranous, keeled, 1-keeled, 1 -nerved. Upper glume lanceolate, 2–3.5 mm long, membranous, keeled, 1-keeled, 1 -nerved.

Florets. Fertile lemma 1.5–3 mm long, without keel, 5 -nerved. Lemma apex dentate, awned, 1 -awned. Median (principal) awn dorsal, 0.5–1 mm long overall. Palea 2 -nerved. Lodicules present. Anthers 3.

Continental Distribution: Australasia.

Australian Distribution: Queensland, New South Wales, Victoria.

Queensland: Burnett, Darling Downs. New South Wales: Northern Tablelands, Central Tablelands. Victoria: Midlands.

Notes. Endemic. Recorded from a single collection in Vic., N from the Jenolan Caves, N.S.W. and into Qld. Usually on granite soils. 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