Aromatic perennial, up to 1.8 m tall. Leaves linear, 3-6 mm wide; ligule an unfringed membrane. Inflorescence a complex leafy panicle, racemes paired, short, (10-)15-20(-28) mm long, rhachis and pedicels densely covered with long hairs; spikelets paired in a sessile and pedicellate combination of dissimilar spikelets. Sessile spikelet 5-6.5 mm long, lower glume winged; lemma awn 15 mm long, glabrous.
Aromatic perennial to 80 cm. Leaves linear, 3-6 mm wide. Spikelets in paired racemes clustered in leafy spathes, rachis and pedicels long-hairy, spikelets 5-6.5 mm long, lower glume of sessile spikelet winged.