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Densely tufted robust, coarse perennial to 1500 mm high; lower culm internodes glabrous. Leaf blade to 500 x 0.9-4.5 mm. Inflorescence with spikelet clusters linear to oblanceolate (including awns); longest pedicel to 8.5 mm long. Spikelet 10-26 mm long (including awns); lower glume 1/2-2/3 the length of upper glume, long-awned; lemma articulation between column apex and awns branching point, sometimes articulation represented only by a swollen line or colour differentiation; column distinct, to 2.5 mm long; awns three, slightly unequal; callus 0.5-1.5 mm long, apex naked, broadly rounded; anther 3.5-4.5 mm long.
Glumes slightly unequal, lanceolate to linear-lanceolate, awned; the inferior 6-7 mm. long, 3-nerved, scaberulous in the upper part, scabrous on the nerves and on the keel, abruptly narrowed into a scabrous awn c. 1.5-2 mm. long; the superior c. 10 mm. long, with a smooth keel, distinctly 2-dentate at the apex with an awn, c. 2 mm. long, from the sinus.
Lemma 6-7 mm. long, finely punctulate, scaberulous towards the apex; callus c. 1-1.5 mm. long, obtuse or subobtuse, long-barbate; column very short, c. 1.5 mm. long, slightly twisted; awns subequal, 10-20 mm. long; articulation between apex of the column of the lemma and the base of the awns.
Panicle up to 40 x 5 cm., dense, more or less contracted, much branched, with a terete or subangular axis; branches 5-11 cm. long, solitary, erect or nearly appressed, branchlets appressed, scabrous.
Leaf-laminae up to 35 x 0.1-0.2 cm., linear, convolute towards the apex, scabrous above, glabrous and prominently ribbed beneath.
Ligule obsolete, minutely ciliate; auricles and the collar glabrous or barbate.
Culms erect, glaucous, glabrous, 3-6-noded; nodes glabrous.
Perennial, up to 1.5 m. high, fairly robust, caespitose.
Spikelets congested, very shortly pedicelled, pallid.
Leaf-sheaths tight, ciliolate along the margins.
A grass.
