Robust, erect perennial, shortly rhizomatous and tufted (coarsely), up to 4 m high. With stilt roots. Leaf blades up to 600 mm long, up to 20 mm wide. Culms to 8 mm thick. Spikelets (sessile) 4-5 mm long (sparsely hairy to nearly glabrous, callus cuneate to acute). Peduncles 10-15 mm long; raceme pairs with 6-8 awns, 20-35 mm long; raceme bases subequal, flattened and short-appendaged; pedicellate spikelets glabrous to sparsely pilose.