Triodia concinna N. T. Burbidge. Austral. J. Bot. 8: 387 (1960).
Classification. (GPWG 2001) : Subfamily Chloridoideae. Triodeae.
Type of Basionym or
Protologue Information: IT: N.H. Speck 1482, 18 Sep 1958, Australia:
Western Australia, Eremean Prov., S. of Railway Line & 30 mi W of Wiluna
(US-3286052). IT: N.H. Speck s.n., 18 Sep 1958, Australia: Western
Australia (L).
Key references
(books and floras): [1981] M.Lazarides in J.Jessop (ed)., Flora of
Central Australia (445), [2002] D.Sharp & B.K.Simon, AusGrass,
Grasses of Australia.
Habit.
Perennial. Stolons present. Culms 40–80 cm tall. Mid-culm internodes glabrous.
Leaf-sheath auricles absent. Ligule a fringe of hairs. Leaf-blades aciculate,
conduplicate, 2–7 cm long, 0.7–3 mm wide.
Inflorescence.
Inflorescence compound, a panicle. Panicle oblong, 4–8 cm long, 1–3.5 cm wide.
Spikelets.
Spikelets pedicelled. Fertile spikelets many flowered, with at least 2 fertile
florets (5–7), comprising 5–7 fertile floret(s), with diminished florets at the
apex, ovate, laterally compressed or terete, 8–15 mm long.
Glumes.
Glumes similar, thinner than fertile lemma. Lower glume lanceolate or ovate,
scarious or cartilaginous, without keels, 5–9 -nerved. Lower glume surface
glabrous. Lower glume apex muticous or mucronate. Upper glume lanceolate or
ovate, 3–5.5 mm long, scarious or cartilaginous, without keels, 5–9 -nerved.
Upper glume surface glabrous. Upper glume apex entire, mucronate.
Florets.
Fertile lemma 4.5–5 mm long, without keel or keeled, 3–5(–9) -nerved. Lemma
surface indumented. Lemma apex dentate or lobed. Anthers 3.
Continental
Distribution: Australasia.
Australian
Distribution: Western Australia.
Western Australia:
Keartland, Carnegie, Austin.
Notes.
Diagnostic characters include the relatively broad, dark purple, tightly
flowered often plump spikelets; cartilaginous glumes, lemmas and paleas;
glabrous, thickly nerved relatively short glumes; minutely subequal sometimes
incurved lemma lobes; relatively long palea with broad exposed irregularly
emarginate keel wings; simple prominently exserted panicles; indurated sheaths
and short finely long-pungent blades with very short petioles.
Between
25°S and 28°S in central W.A. Sandplain, red loam and lateritic soils; flowers
July, Sept.
