Austrostipa semibarbata

Austrostipa semibarbata (R.Br.)
S.W.L.Jacobs & J.Everett. Telopea 6: 588 (1996).

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

Basionym and/or
Replacement Name:
R.Br., Prodr. 174 (1810).

Type of Basionym or
Protologue Information
: HT: R. Brown 6204, Australia: Tasmania: Port
Dalrymple (BM).

Key references
(books and floras):
[1810]. R.Brown, Prodromus (174 as Stipa),
[1878] G.Bentham, Flora Australiensis 7 (568 as Stipa semibarbata),
[1952] C.A.Gardner, Flora of Western Australia 1 Gramineae (179
as Stipa), [1981] M.Lazarides in J.Jessop (ed)., Flora of Central
(437 as Stipa semibarbata var. semibarbata), [2002]
D.Sharp & B.K.Simon, AusGrass, Grasses of Australia, [2002]
J.Wheeler, N.Marchant & M.Lewington, Flora of the South West (404), [2006]
J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South Australia (103),
[2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses of New South
(159), [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae
2 (20).

[2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South Australia  (104, Fig. 66), [2008] S.W.L.Jacobs,
R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales, 4th edn
(159), [2009]. A.Wilson (ed.), Flora of Australia 44A: Poaceae 2
(18, Fig. 2).

Perennial. Culms 30–100 cm tall, 3–5 -noded. Mid-culm nodes pubescent.
Leaf-sheaths scaberulous, glabrous on surface or hairy. Ligule a fringed
membrane, a ciliate membrane, 1–2 mm long, truncate. Leaf-blades erect,
involute or convolute, 15–35 cm long, 1–3(–7) mm wide. Leaf-blade surface
glabrous or indumented.

Inflorescence compound, a panicle. Panicle oblong, 15–30 cm long.

Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), without rachilla extension, lanceolate, terete, 17–24 mm long.

Glumes. Glumes
similar, thinner than fertile lemma. Lower glume linear, membranous, without
keels, 3 -nerved. Upper glume linear, 15–25 mm long, membranous, without keels,
5 -nerved.

Fertile lemma 7–8 mm long, without keel. Lemma surface indumented. Lemma apex
awned, 1 -awned. Median (principal) awn 70–110 mm long overall, with a twisted
column. Column 30–40 mm long. Palea without keels. Lodicules present. Anthers
3. Grain 5.5–6.5 mm long.

: Australasia.

: Western Australia, South Australia, New South Wales,
Victoria, Tasmania.

Western Australia:
Drummond, Menzies. South Australia: Eyre Peninsula, Northern Lofty,
Murray, Southern Lofty, Kangaroo Island, South-eastern. New South Wales:
South Coast, Central Tablelands, Southern Tablelands. Victoria: East
Gippsland, Gippsland Plain, Grampians, Midlands, Otway Plain, Otway Range,
Wilsons Promontory, Volcanic Plain, Wimmera. Tasmania: North East,
Central Highlands, Midlands, East Coast.

Notes. Widespread in
Victoria, Tasmania and South Australia, extending into southern New South Wales
and southern Western Australia.

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