Austrostipa hemipogon (Benth.) S.W.L.Jacobs & J.Everett. Telopea 6: 586 (1996).
Classification. (GPWG 2001) : Subfamily Pooideae. Tribe Stipeae.
Basionym and/or Replacement Name: Stipa hemipogon
Benth., Fl. Austral. 7: 569 (1878).
Type of Basionym or
Protologue Information: LT: Drummond 376, Australia: Western
Australia (K; ILT: MEL). LT designated by Vickery, Jacobs & Everett,
Telopea 3: 63 (1986).
Recent synonyms:
Stipa indeprensa, S. nobilis, S. plagiopogon.
Key references
(books and floras): [1878] G.Bentham, Flora Australiensis 7 (569 as Stipa
hemipogon), [1952] C.A.Gardner, Flora of Western Australia 1 Gramineae
(178 as Stipa), [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
Australia, [2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South
Australia (101), [2009] A.Wilson (ed.). Flora of Australia, Vol 44A.
Poaceae 2 (20).
Illustrations:
[1952] C.A.Gardner, Flora of Western Australia 1 Gramineae (173,
Pl.50 as Stipa nobilis), [2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses
of South Australia (102, fig. 64),
[2009]. A.Wilson (ed.), Flora of Australia 44A: Poaceae 2 (18,
fig.2B, fig. 3A-E).
Habit.
Perennial. Culms erect, stature robust to moderate, 40–100 cm tall. Leaf-sheaths
smooth or scaberulous. Ligule a fringed membrane, a ciliate membrane, 0.3–3 mm
long, membranous, truncate. Leaf-blades erect, involute or convolute, 2–3 mm
wide. Leaf-blade surface glabrous or indumented.
Inflorescence.
Inflorescence compound, a panicle. Panicle oblong, 10–30 cm long.
Spikelets.
Spikelets sessile or pedicelled. Fertile spikelets 1-flowered, comprising 1
fertile floret(s), without rachilla extension, lanceolate, terete, 12–17 mm
long.
Glumes. Glumes
similar, thinner than fertile lemma, shiny. Lower glume lanceolate, membranous,
without keels, 3 -nerved. Upper glume lanceolate, 10–17 mm long, membranous,
without keels, 5 -nerved.
Florets.
Fertile lemma 6.5–8.5 mm long, without keel. Lemma surface indumented. Lemma
apex awned, 1 -awned. Median (principal) awn 30–67 mm long overall, with a
twisted column. Column 10–20 mm long. Palea without keels. Grain 3–4 mm long.
Continental
Distribution: Australasia.
Australian
Distribution: Western Australia, South Australia, Victoria.
Western Australia:
Eucla, Irwin, Drummond, Menzies, Eyre, Avon, Coolgardie. South Australia:
Flinders Ranges, Eyre Peninsula, Murray, Yorke Peninsula, Southern Lofty,
Kangaroo Island, South-eastern. Victoria: Lowan Mallee, Midlands, Murray
Mallee, Volcanic Plain.
Flora of Australia Notes.
Southern regions of South Australia and Western Australia, and western
Victoria.
AVH 2012 © ALA
