Aristida burraensis B.K.Simon. Austrobaileya
2: 89 (1984).
Classification. (GPWG 2001) : Subfamily
Aristidoideae. Aristideae.
Type of Basionym or
Protologue Information: Queensland: North Kennedy District: Burra Range, 25
km W of Pentland, July 1975, A. D. Chapman 1314 (HT: BRI-238092; IT:
CANB, K, L).
Key references
(books and floras): [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of
Australia.
Illustrations:
[2005] K.Mallet (ed.), Flora of Australia 44B: Poaceae 3 (Fig.
20S-U).
Derivation: L.
-ensis, denoting origin. From the Burra Range, Queensland, Australia.
Habit.
Perennial. Culms 40–80 cm tall, 1–3 -noded. Mid-culm internodes glabrous.
Leaf-sheaths scaberulous. Ligule a fringe of hairs, 0.4 mm long. Leaf-blades
straight, filiform, conduplicate or involute or convolute, 7–14 cm long, 1 mm
wide. Leaf-blade surface scaberulous.
Inflorescence.
Inflorescence compound, a panicle. Panicle linear, 16–28 cm long, 2 cm wide.
Spikelets.
Spikelets pedicelled. Fertile spikelets 1-flowered, comprising 1 fertile
floret(s), without rachilla extension, lanceolate, terete, 6.6–8 mm long.
Glumes. Glumes
similar, thinner than fertile lemma. Lower glume lanceolate, membranous,
keeled, 1-keeled, 1 -nerved. Upper glume lanceolate, 6.5–8 mm long, membranous,
keeled, 1-keeled, 1 -nerved. Upper glume apex entire.
Florets.
Fertile lemma 6 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 4.5 mm long.
Continental
Distribution: Australasia.
Australian
Distribution: Queensland.
Queensland:
North Kennedy, Mitchell.
Notes.
A. burraensis differs from A. nitidula by having smooth lemmas
and from A. latzii by its shorter lemmas and more slender awns.
Restricted
to the Burra Range of north central Queensland. Sandstone in Eucalyptus
similis woodland. Flowering and fruiting July.
