Austrostipa trichophylla

Austrostipa trichophylla (Benth.)
S.W.L.Jacobs & J.Everett. Telopea 6: 589 (1996).

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

Basionym and/or
Replacement Name:
Benth., Fl. Austral. 7: 570 (1878).

Type of Basionym or
Protologue Information
: HT: Drummond 122, Australia: Western
Australia (K (photo, CANB); IT: MEL-60010, MEL-60011).

Key references
(books and floras):
[1878] G.Bentham, Flora Australiensis 7 (570 as Stipa
), [1952] C.A.Gardner, Flora of Western Australia 1 Gramineae
(179 as Stipa), [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
, [2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South
(79), [2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses
of New South Wales
(160), [2009] A.Wilson (ed.). Flora of Australia,
Vol 44A. Poaceae 2 (49).

[1952] C.A.Gardner, Flora of Western Australia 1 Gramineae,
[2006] J.Jessop, G.R.M.Dashorst, F.M.James, Grasses of South Australia  (79, Fig. 40), [2008] S.W.L.Jacobs,
R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South Wales, 4th edn
(160), [2009]. A.Wilson (ed.), Flora of Australia 44A: Poaceae 2
(24, Fig.2F-H).

Perennial. Culms 20–60 cm tall. Mid-culm nodes glabrous or pubescent.
Leaf-sheaths smooth or scaberulous, glabrous on surface or hairy. Ligule a
fringed membrane, a ciliate membrane, 0.5–1 mm long, membranous, obtuse.
Leaf-blades filiform, involute, 0.3–2 mm wide. Leaf-blade surface indumented.

Inflorescence compound, a panicle or a panicle. Panicle oblong, 13–26 cm long.

Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), without rachilla extension, lanceolate, terete, 10 mm long.

Glumes. Glumes
similar, thinner than fertile lemma. Lower glume linear, membranous, without
keels, 3 -nerved. Upper glume linear, 8–11.5 mm long, membranous, without
keels, 5 -nerved.

Fertile lemma 5–6 mm long, without keel. Lemma surface indumented. Lemma apex
lobed, awned, 1 -awned. Median (principal) awn 38–60(–75) mm long overall, with
a twisted column. Column 6–13 mm long. Palea without keels. Grain 2.3–3 mm

: Australasia.

: Western Australia, Northern Territory, South Australia, New
South Wales, Victoria.

Western Australia:
Helms, Carnarvon, Austin. Eucla, Irwin, Menzies, Eyre, Roe, Avon, Coolgardie. Northern
: Central Australia South. South Australia: North-western,
Lake Eyre, Gairdner-Torrens Basin, Flinders Ranges, Eastern, Eyre Peninsula,
Northern Lofty, Murray, Southern Lofty, South-eastern. New South Wales:
South-Western Plains, North Far Western Plains. Victoria: Lowan Mallee,

Notes. Scattered and
uncommon in the drier areas of New South Wales, Victoria, South Australia,
Northern Territory 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