Austrostipa bigeniculata

Austrostipa bigeniculata (Hughes)
S.W.L.Jacobs & J.Everett. Telopea 6: 584 (1996).

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

Basionym and/or
Replacement Name:
Hughes,  Bull. Misc.
Inform. Kew
1922: 20 (1922).

Type of Basionym or
Protologue Information
: HT: R.T. Baker s.n., Jan 1887, Australia:
New South Wales: Cooma (K; IT: US-993695).

Key references
(books and floras):
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
, [2008] S.W.L.Jacobs, R.D.B.Walley & D.J.B.Wheeler, Grasses
of New South Wales
(151), [2009] A.Wilson (ed.). Flora of Australia,
Vol 44A. Poaceae 2 (52).

[2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South
, 4th edn (151), [2009]. A.Wilson (ed.), Flora of Australia 44A:
Poaceae 2 (37, Fig 5).

Derivation: L. bis,
twice; geniculata, kneed. Awn of lemma bent in two places.

Perennial. Culms erect, 20–100 cm tall, 2–4 -noded. Mid-culm nodes pubescent.
Leaf-sheaths glabrous on surface. Ligule a fringed membrane, a ciliolate
membrane, 0.3–0.5 mm long, truncate. Leaf-blades filiform, involute or
convolute, 20–45 cm long, 1–3 mm wide. Leaf-blade surface scabrous, glabrous.

Inflorescence compound, a panicle or a panicle. Panicle linear, 10–45 cm long,
1–3 cm wide.

Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), without rachilla extension, lanceolate, terete, 15–20 mm long.

Glumes. Glumes
similar, thinner than fertile lemma. Lower glume lanceolate, membranous,
without keels, 3 -nerved. Upper glume lanceolate, 9–15 mm long, membranous,
without keels, 5 -nerved. Upper glume surface indumented.

Fertile lemma 7.3–10.5 mm long, without keel. Lemma surface indumented. Lemma
apex lobed, awned, 1 -awned. Median (principal) awn 30–60 mm long overall, with
a twisted column. Column 12–22(–26) mm long. Palea without keels. Lodicules
present. Anthers 3. Grain 3.5–4.5 mm long.

: Australasia.

: New South Wales, Victoria, Tasmania.

New South Wales:
Central Tablelands, Southern Tablelands, Central-Western Slopes, South-Western
Slopes, North-Western Plains, South-Western Plains. Victoria: East
Gippsland, Midlands, Murray Mallee, Riverina, Volcanic Plain, Wannon, Wimmera. Tasmania:
East Coast.

Notes. Wooded areas of the
Central and Southern Tablelands and Slopes of New South Wales, and scattered
through Victoria and Tasmania.

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