Austrostipa rudis

Austrostipa rudis (Spreng.) S.W.L.Jacobs
& J.Everett. Telopea 6: 588 (1996).

(GPWG 2001) : Subfamily Pooideae. Tribe Stipeae.

Basionym and/or
Replacement Name:
 Stipa rudis Spreng.,
4: Cur. Post. 31 (1827).

Type of Basionym or
Protologue Information
: HT: Sieber 66, Australia (?; IT: K,
MEL59980, MEL-59982).

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
(158), [2009] A.Wilson (ed.). Flora of Australia,
Vol 44A. Poaceae 2 (38 as subsp. rudis, subsp. australis,
39 as subsp. nervosa).

[2008] S.W.L.Jacobs, R.D.B.Whalley & D.J.B.Wheeler, Grasses of New South
, 4th edn (158).

Perennial. Rhizomes absent or present, short. Culms geniculately ascending,
60–120 cm tall, 2–4 mm diam., firm, 2–4 -noded. Mid-culm internodes pubescent.
Mid-culm nodes pubescent. Lateral branches simple. Leaf-sheaths glabrous on
surface or hairy. Ligule a fringed membrane, a ciliolate membrane, 0.5–2 mm
long, scarious, abaxially hairy, truncate or acute. Leaf-blades erect, involute
or convolute, 20–40 cm long, 2–5 mm wide. Leaf-blade surface scaberulous,

Inflorescence compound, a panicle or a panicle. Panicle linear, 25–50 cm long,
1.5–5 cm wide.

Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), without rachilla extension, linear, terete, 8–15 mm long.

Glumes similar, thinner than fertile lemma. Lower glume linear or oblong,
membranous, without keels, 3 -nerved. Lower glume surface glabrous or
indumented. Upper glume linear or oblong, 7–14.5 mm long, membranous, without
keels, 3–5 -nerved. Upper glume surface asperulous, glabrous or indumented.
Upper glume apex erose.

Fertile lemma 5–11.5 mm long, without keel, 5 -nerved. Lemma surface
indumented. Lemma apex entire or lobed, awned, 1 -awned. Median (principal) awn
20–90 mm long overall, with a twisted column. Column 4.5–45 mm long. Palea 2
-nerved, without keels. Lodicules present. Anthers 3. Grain 3–6 mm long.

: Australasia.

: Queensland, New South Wales, Victoria, Tasmania.

Burnett, Darling Downs, Moreton. New South Wales: Central Coast, South
Coast, Northern Tablelands, Central Tablelands, Southern Tablelands,
North-Western Slopes. Victoria: East Gippsland, Eastern Highlands,
Gippsland Plain, Midlands, Otway Range, Volcanic Plain, Wannon. Tasmania:
North West, Central Highlands, Midlands, Ben Lomond, East Coast.

Notes. Three
subspecies are recognised, following J.Everett & S.W.L.Jacobs, Telopea
2: 395 (1983).

A widespread species of higher areas in eastern Australia,
from south-eastern Queensland to Tasmania.

 subsp. rudis

 On sandstone
in higher areas of south-eastern Queensland and eastern New South Wales and

 subsp. australis

 Sandstone in
higher areas of eastern Victoria, and Tasmania.

 subsp. nervosa

 Sandstone in
higher areas of south-eastern Queensland, eastern New South Wales and Victoria.


Infra -specific
subsp. australis, subsp. rudis, subsp. nervosa.

Awn 60–90 mm long with
column 32–45 mm long                             A. rudis subsp. australis

Awn less than 60 mm
long with column to 25 mm long     

Column 20–25 mm long;
callus 1.5–2.5 mm long                                A. rudis subsp. rudis

Column less than 20 mm long; callus 0.8–1.7 mm long      A. rudis subsp. nervosa


Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith