Enneapogon avenaceus (Lindl.) C. E.
Hubbard. Kew Bull. 1934: 450 (1934).
Classification. (GPWG 2001) : Subfamily
Replacement Name: Pappophorum
avenaceum Lindl., J. Exped. Trop. Australia 320 (1848).
Type of Basionym or
Protologue Information: HT: Mitchell s.n., 22 Sep 1846, Australia:
Queenland: Victoria River (Barcoo River), 24.01S 145.2E (CGE).
(books and floras):  G.Bentham, Flora Australiensis 7 (601 as Pappophorum
avenaceum),  C.A.Gardner, Flora of Western Australia 1 Gramineae
(30),  M.Lazarides in J.Jessop (ed)., Flora of Central Australia
(454),  D.Sharp & B.K.Simon, AusGrass, Grasses of Australia,
 J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South Australia
(331),  S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses of New
South Wales (240).
 K.Mallet (ed.), Flora of Australia 44B: Poaceae 3 (Fig.
31A-E),  J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South
Australia (331, Fig. 263), 
S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales,
4th edn (240).
or perennial. Culms 7–45 cm tall. Lateral branches simple or sparsely branched.
Ligule a fringe of hairs. Leaf-blades flat or involute, 1–3 mm wide.
Inflorescence solid, a panicle. Panicle linear to ovate, 3–9 cm long, 1–3 cm
pedicelled. Fertile spikelets many flowered, with at least 2 fertile florets
(2–3(-4)), comprising 2–3(–4) fertile floret(s), with diminished florets at the
apex, oblong, laterally compressed, 4–13.6 mm long.
Glumes similar, thinner than fertile lemma. Lower glume ovate, membranous,
without keels, 8–23 -nerved. Lower glume surface glabrous or indumented. Upper
glume ovate, 4–13.6 mm long, membranous, without keels, 8–23 -nerved. Upper
glume surface glabrous or indumented.
Fertile lemma 1.8–3.5 mm long, without keel, 9–11 -nerved. Lemma surface
indumented. Lemma apex dentate or lobed, awned, 9 -awned. Median (principal)
awn (2.7–)7–11(–15.4) mm long overall. Lateral lemma awns present. Lodicules
present. Anthers 3. Grain 1–1.6 mm long.
Distribution: Western Australia, Northern Territory, South Australia,
Queensland, New South Wales, Victoria.
Gardner. Giles, Ashburton, Carnarvon, Austin. Coolgardie. Northern Territory:
Darwin & Gulf, Barkly Tableland, Central Australia North, Central Australia
South. South Australia: North-western, Lake Eyre, Nullabor,
Gairdner-Torrens Basin, Flinders Ranges, Eastern, Eyre Peninsula, Murray. Queensland:
Burke, Gregory North, Maranoa, Mitchell, North Kennedy, Warrego, Gregory South.
New South Wales: North-Western Plains, South-Western Plains, North Far
Western Plains, South Far Western Plains. Victoria: Murray Mallee.
Distinctive due to its many fertile florets, long lemma hairs, often loose
panicle, wider than long lemma and long, unequally wide lobes. A wing-like,
hyaline margin on the basal lemma of some plants is also noteworthy.
in arid and semiarid parts of all mainland states except Vic. Usually in sandy
soils or disturbed sites.