Austrostipa centralis

Austrostipa centralis (Vickery,
S.W.L.Jacobs & J.Everett) S.W.L.Jacobs & J.Everett. Telopea 6:
584 (1996).

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

Basionym and/or
Replacement Name:
 Stipa centralis
Vickery, S.W.L. Jacobs & J. Everett, Telopea 3(1): 39 (1986).

Type of Basionym or
Protologue Information
: Australia: Northern Territory: Mt. Riddock, 23.06S
134.38E, erect perennial, common in skeletal soil, southern slope of
metamorphic hill, 13 Sep 1973, P.K. Latz 4305 (HT: NT-41138).

Key references
(books and floras):
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
, [2009] A.Wilson (ed.). Flora of Australia, Vol 44A. Poaceae
2 (56).

[2009]. A.Wilson (ed.), Flora of Australia 44A: Poaceae 2 (18,

Derivation: L. centrum,
centre of a circle; -ale, pertaining to. From Central Australia.

Perennial. Rhizomes present, short. Culms 40–80 cm tall, 1 mm diam., 4–5
-noded. Mid-culm nodes glabrous. Lateral branches simple. Leaf-sheaths glabrous
on surface or hairy. Ligule an eciliate membrane, 0.6–1 mm long, scarious,
abaxially hairy, acute. Leaf-blades involute, 10–25 cm long, 1.5 mm wide.
Leaf-blade surface scaberulous.

Inflorescence compound, a panicle. Panicle linear, 10–20 cm long, 1–2.5 cm

Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), without rachilla extension, linear, terete, 13–18 mm long.

Glumes. Glumes
similar, thinner than fertile lemma. Lower glume elliptic, hyaline, without
keels, 3 -nerved. Lower glume surface indumented. Upper glume elliptic, 12–16
mm long, hyaline, without keels, 5 -nerved. Upper glume surface indumented.

Fertile lemma 5–9 mm long, without keel, 5 -nerved. Lemma surface glabrous.
Lemma apex entire or dentate or lobed, awned, 1 -awned. Median (principal) awn
from a sinus, 50–60 mm long overall, with a twisted column. Column 12–25 mm
long. Palea 2 -nerved, without keels. Lodicules present. Anthers 3. Grain 2.5
mm long.

: Australasia.

: Northern Territory.

Northern Territory:
Central Australia South.

Notes. The panicle of this
species is sparse, with relatively few (less than 30) spikelets.

Slopes of the Central Australian

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