Deyeuxia apsleyensis

Deyeuxia apsleyensis D.I. Morris. Muelleria 7:160 (1990).

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

Type of Basionym or Protologue Information: Australia: Tasmania: Apsley River area, north of Apsley Gorge, 3 Feb 1988, F. Duncan s.n. (HT: HO-111147; IT: NSW).

Key references (books and floras): [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of Australia, [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae 2 (198).

Habit. Perennial. Culms erect, stature slender to delicate, 50–90 cm tall. Mid-culm internodes glabrous or pilose. Mid-culm nodes glabrous. Lateral branches simple. Leaves mostly basal. Leaf-sheaths smooth or retrorsely scabrous, glabrous on surface or hairy. Ligule a fringed membrane, a ciliolate membrane, 1 mm long, membranous, abaxially hairy, obtuse. Leaf-blades conduplicate or involute, 15–35 cm long, 1–1.5 mm wide. Leaf-blade surface indumented.

Inflorescence. Inflorescence compound, a panicle or a panicle. Panicle elliptic, 7–14 cm long.

Spikelets. Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile floret(s), with a barren rachilla extension, oblong, laterally compressed, 5.5–6.75 mm long.

Glumes. Glumes similar, thinner than fertile lemma. Lower glume lanceolate, membranous, keeled, 1-keeled, 1 -nerved. Upper glume lanceolate, 5–6.5 mm long, membranous, keeled, 1-keeled, 1 -nerved. Upper glume surface smooth or asperulous.

Florets. Fertile lemma 5–6.5 mm long, without keel, 5 -nerved. Lemma apex dentate, awned, 1 -awned. Median (principal) awn dorsal, 7.5–8 mm long overall, with a twisted column. Lodicules present. Anthers 3. Grain 3 mm long.

Continental Distribution: Australasia.

Australian Distribution: Tasmania.

Tasmania: East Coast.

Notes. Endemic. E of Apsley R. above Apsley Gorge, Tas. Eucalypt forest in undulating low hills.

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