Cymbopogon queenslandicus

Cymbopogon queenslandicus S. T. Blake. Contr.
Queensland Herb.
17: 53 (1974).

Classification. (GPWG 2001) : Subfamily
Panicoideae. Andropogoneae.

Type of Basionym or
Protologue Information
: Australia: Queensland: Townsville, upper slopes of
Castle Hill, 210–230 m, Mar 1935, S.T. Blake 8353 (HT: BRI-045247,
BRI-045246; IT: K).

Key references
(books and floras):
[1878] G.Bentham, Flora Australiensis 7 (534 as Andropogon
), [2002] D.Sharp & B.K.Simon, AusGrass, Grasses of

Perennial. Culms erect, 70–150 cm tall. Mid-culm internodes glabrous or
pubescent. Leaf-sheaths glabrous on surface. Ligule an eciliate membrane, 2–5
mm long. Leaf-blades 15–50 cm long, 3–10 mm wide. Leaf-blade surface
scaberulous, glabrous.

Inflorescence compound, composed of rames. Central inflorescence axis 25–45 cm
long. Rhachis fragile at the nodes.

Spikelets sessile, 1 in the cluster. Companion spikelets pedicelled, 1 in the
cluster. Basal sterile spikelets absent. Companion spikelets developed,
containing empty lemmas or male, 4–6 mm long. Companion spikelet glumes
muticous. Fertile spikelets 2-flowered, the lower floret barren (rarely male),
the upper fertile, comprising 1 basal sterile florets, comprising 1 fertile floret(s),
without rachilla extension, lanceolate or elliptic or oblong or obovate,
dorsally compressed, 4–6 mm long.

Glumes. Glumes
dissimilar, firmer than fertile lemma. Lower glume linear or oblong,
chartaceous, keeled, 2-keeled, winged on keel, winged narrowly, 2–4 -nerved.
Upper glume lanceolate, keeled, 1-keeled. Florets. Basal sterile florets
1, barren, without significant palea. Lemma of lower sterile floret hyaline.

Fertile lemma without
keel. Lemma apex lobed, awned, 1 -awned. Median (principal) awn from a sinus,
10–12 mm long overall, with a twisted column. Palea absent. Anthers 3.

: Australasia.

: Queensland.

Burke, Burnett, Cook, Leichhardt, North Kennedy, Port Curtis, South Kennedy,
Wide Bay, Burke.

Notes. A
species confined to Qld where it is found in Eucalyptus forests, often
on stony hillsides. Flowers Jan.--Sept.

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