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Perennial 300-2000 mm high, usually glaucous; rhizomatous; basal sheath glabrous, inner often shiny. Leaf blade 150-300 x to 20 mm, expanded, usually more than 3 mm wide, rarely densely hairy; bases, at least of upper leaves, narrowly to broadly rounded or cordate, clasping stem; young growth waxy. Inflorescence of 2 racemes, racemes 50-100 mm long; internodes and pedicels hairy; internode hollow at apex. Sessile spikelet 7-9 mm long; lower glume rounded on either side of deep central groove, apex lobed; upper glume acute, mucronate; lemma awn 20-70 mm long, hairy; callus 1-5 mm long, hairy only towards the point; anthers 4-6 mm long. Pedicellate spikelet 9-13 mm; lower glume with or without awn up to 11.5 mm long (variable on same inflorescence), keeled, keels rounded, not winged; upper glume acuminate, awnless.
Perennial with short scaly rhizomes; culms 30–200 cm. high.. Leaf-blades 15–30 cm. long, the basal leaves linear, the cauline often ± cordate at the base.. Inflorescence a scanty spathate false panicle; racemes 4–9 cm. long, with 1 homogamous pair at the base of the lower raceme only.. Sessile spikelet terete, with a callus 1–2 mm. long; lower glume 5–7 mm. long, the keels rounded and 4–7-nerved, sulcate between them; awn of upper lemma 2.5–7 cm. long, puberulous to pubescent.. Caryopsis hollowed on one face.. Pedicelled spikelet 9–13 mm. long, not winged, with or without an awn up to 8 mm. long.
Perennial; up to 2 m high; rhizomatous; young growth waxy. Leaf blades 150-300 x 20 mm; expanded; base rounded or cordate; clasping stem. Flowers: inflorescence digitate with 2 racemes; sessile spikelets 7-9 mm long; pedicellate spikelets longer; callus hairy only near apex.
Sessile spikelet 5.5–8.5 mm long, very pointed and with silvery-white appressed hairs at the base; inferior glume with a deep median groove; lemma with pilose awn 3–6 cm long; anthers 3–6 mm long, straw-coloured.
Racemes in pairs, 5–10 cm long, exserted from the spatheoles at maturity; internodes and pedicels with short, dense, silvery-white or rarely brown hairs, the internode broadening and hollow at the apex.
Leaves glabrous, rarely densely pubescent; ligule a minutely fimbriate rim 0.5–1.5 mm long; laminas 8–30 cm × 2.5–26 mm wide at the base, flat, broadly or narrowly cordate at the base.
Perennial, rhizomatous, up to 2 m high. Leaf blades 150-300 mm long, 20 mm wide, bases rounded, clasping stem; young growth waxy. Spikelets (sessile) 7-9 mm long (pedicellate longer).
Caespitose, rhizomatous perennial; culms 40–200(300) cm high, erect, glaucous, often flushed with purple.
Pedicelled spikelet male, 8–13 mm long; inferior glume with an awn 2–11.5 mm long.
