Perennial; caespitose. Rhizomes short; pachymorph. Culms erect, or leaning; 200-400 cm long; 10-12 mm diam.; woody; without nodal roots. Culm-internodes terete; thick-walled; 16-22 cm long; glaucous; distally glabrous. Lateral branches dendroid; extravaginal; ascending. Bud complement 10-15. Branch complement several; in a clump. Culm-sheaths deciduous; 7.2-10.2 cm long; glabrous; hairy on margins; without auricles. Culm-sheath ligule 0.4 mm high; ciliolate. Culm-sheath blade lanceolate; deciduous; reflexed; 1-4.6 cm long; glabrous on surface; acuminate. Leaves 7-8 per branch. Leaf-sheaths deciduous; glabrous on surface; outer margin hairy. Ligule an eciliate membrane; 1-3 mm long; pubescent on abaxial surface; obtuse. Collar with external ligule. Leaf-blade base with a brief petiole-like connection to sheath; petiole 0.1-0.3 cm long. Leaf-blades lanceolate; 7-16 cm long; 4-11 mm wide; coriaceous. Leaf-blade venation without cross veins. Leaf-blade surface glabrous.
Inflorescence a panicle; embraced at base by subtending leaf. Panicle contracted; lanceolate; 3-3.5 cm long. Primary panicle branches appressed; 0.5-0.8 cm long. Panicle branches scabrous; glabrous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; 1-3 mm long; scaberulous; glabrous.
Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma. Lower glume orbicular; 0.1 mm long; 0.5-0.6 length of upper glume; membranous; without keels; 0 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume orbicular; 0.1-0.2 mm long; 0.03 length of adjacent fertile lemma; without keels; 0 -veined. Upper glume primary vein absent. Upper glume lateral veins absent. Upper glume apex obtuse.
Basal sterile florets similar; barren; without significant palea; attached to and deciduous with the fertile. Lemma of lower sterile floret ovate; 3.5-4.5 mm long; 0.4 length of fertile lemma; chartaceous; 1-3 -veined; without lateral veins, or distinctly veined; acute. Lemma of upper sterile floret ovate; 3.5-4.5 mm long; 1 length of lower sterile floret; chartaceous; acute. Fertile lemma elliptic; 7.9-8.3 mm long; coriaceous; without keel; 7-9 -veined. Lemma apex acute; muticous, or mucronate. Palea 7.6-7.9 mm long; 1 length of lemma; 4 -veined. Palea surface scabrous.
Lodicules 3; membranous. Anthers 3. Stigmas 2.
Caryopsis with adherent pericarp; apex unappendaged.