Aristida exserta S.T.Blake. Proc.
Roy. Soc. Qld 51: 172, T.5, fig 6–9
Classification. (GPWG 2001) : Subfamily
Type of Basionym or
Protologue Information: HT: Blake 6130, 11 Jun 1934, Australia:
Queensland: North Kennedy Dist.: Mt. Remarkable, near Pentland (BRI: IT: BRI,
(books and floras):  D.Sharp & B.K.Simon, AusGrass, Grasses of
 J.C.Tothill & J.B.Hacker, Grasses of Southern Queensland
(106(26)),  D.Sharp & B.K.Simon, AusGrass, Grasses of Australiia.
exserted. Peduncle longer than in related species.
Perennial. Culms 45–75 cm tall. Mid-culm internodes glabrous. Lateral branches
branched or fastigiate. Leaf-sheaths glabrous on surface. Ligule a fringe of
hairs, 0.3 mm long. Leaf-blades straight, filiform, conduplicate or involute or
convolute, 4–8 cm long, 0.5 mm wide. Leaf-blade surface scabrous.
Inflorescence compound, a panicle. Panicle linear, 10–15 cm long, 1 cm wide.
Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), without rachilla extension, lanceolate, terete, 7–11 mm long.
similar, thinner than fertile lemma. Lower glume lanceolate, membranous,
keeled, 1-keeled, 3 -nerved. Lower glume apex awned. Upper glume lanceolate,
6.5–10 mm long, membranous, keeled, 1-keeled, 1 -nerved. Upper glume apex
entire or erose, awned.
Fertile lemma 7–11 mm long, without keel, 3 -nerved. Lemma apex awned, 3
-awned. Median (principal) awn without a column. Lateral lemma awns present.
Palea without keels. Anthers 3. Grain 5–6 mm long.
Distribution: Western Australia, Northern Territory, Queensland.
Gardner. Fortescue. Northern Territory: Darwin & Gulf, Victoria
River, Barkly Tableland. Queensland: Burke, Cook, North Kennedy,
A. exserta is distinguished by the thin fastigiate culms, rather small
spiciform panicles. It is superficially close to A. capillifolia,
differing in its involute lemmas and its 3-nerved glumes.
Mainly from the
northern Australia. Rocky outcrops and mountain ranges. Flowering and fruiting
January to September but mainly March to July.