Deyeuxia affinis

Deyeuxia affinis M. Gray. Contrib. Herb. Austral. 26: 9 (1976).

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

Type of Basionym or Protologue Information: Australia, Mt. Kosciusko: Gray 6759 & Totterdell (CANB 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 (210).

Illustrations: [2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales, 4th edn (199), [2009]. A.Wilson (ed.), Flora of Australia 44A: Poaceae 2 (205, Fig.28).

Habit. Perennial. Culms geniculately ascending, stature slender to delicate, 30 cm tall. Mid-culm internodes glabrous. Lateral branches simple. Leaves mostly basal. Ligule an eciliate membrane, membranous, truncate or obtuse. Leaf-blades conduplicate or involute, 1–6 cm long, 3 mm wide. Leaf-blade surface glabrous or indumented.

Inflorescence. Inflorescence solid, a panicle. Panicle elliptic or oblong, 2–5 cm long.

Spikelets. Fertile spikelets with a barren rachilla extension, 2.8–3.5 mm long.

Glumes. Lower glume lanceolate, 1 -nerved. Upper glume lanceolate, 2.5–3.5 mm long, 1 -nerved.

Florets. Fertile lemma 2.3–2.8 mm long, without keel. Lemma apex dentate, awned. Median (principal) awn dorsal, with a straight or slightly twisted column or with a twisted column. Palea apex entire or dentate.

Continental Distribution: Australasia.

Australian Distribution: New South Wales, Victoria.

New South Wales: Southern Tablelands. Victoria: Snowfields.

Notes. Endemic. In the Kosciusko region of N.S.W. and near Mt Cope, Vic. In rocky areas of short alpine herbfields, and in moist areas. Flowers Jan.-Feb.

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