Ectrosia confusa

Ectrosia confusa C. E. Hubbard. Hooker's Icon. Pl. ser. 5, 4 t. 3312: 14–15

Classification. (GPWG 2001) : Subfamily
Chloridoideae. Cynodonteae.

Type of Basionym or
Protologue Information
: Australia: Queensland, between Norman and Gilbert
rivers, Gulliver s.n..

Key references
(books and floras):
[2002] D.Sharp & B.K.Simon, AusGrass, Grasses of

Habit. Annual.
Culms erect or geniculately ascending, stature slender to delicate, 15–31 cm
tall, 2–3 -noded. Mid-culm internodes glabrous. Lateral branches simple or
sparsely branched. Leaf-sheaths glabrous on surface or hairy. Ligule a fringe
of hairs. Leaf-blades flat or convolute, 4–8 cm long, 0.6–2 mm wide. Leaf-blade
surface glabrous or indumented.

Inflorescence compound, a panicle. Panicle lanceolate, loose or effuse, 3–10 cm
long, 1–2.5 cm wide.

Spikelets pedicelled. Fertile spikelets many flowered, with at least 2 fertile
florets (2–5), comprising 2–5 fertile floret(s), with diminished florets at the
apex, oblong or obovate, laterally compressed, 4–5 mm long.

Glumes. Glumes
similar. Lower glume lanceolate, membranous, keeled, 1-keeled, 1 -nerved. Upper
glume lanceolate, 2–3.5 mm long, membranous, keeled, 1-keeled, 3 -nerved.

Fertile lemma 3–6 mm long, keeled, 3 -nerved. Lemma surface glabrous. Lemma
apex awned, 1 -awned. Median (principal) awn 1–3 mm long overall. Palea 2
-nerved. Anthers 3. Grain 1 mm long.

: Australasia.

: Northern Territory, Queensland.

Northern Territory:
Darwin & Gulf. Queensland: Burke, Cook.

Endemic; inland and near-coastal parts of the northern N.T., S of Pine Ck, and
northern part of Qld, S of Cape Flattery, within 300 km of the coast. In
heathlands or open forest, mainly on sand in hilly areas and along creek lines.

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