Tufted, reed-like perennial, 0.8-2.5 m high; rhizome creeping, often branched. Leaf blade 250-600 x 4-11 mm, hard, flat or sometimes rolled, glabrous or variably pilose; ligule a fringe of hairs. Inflorescence a cylindrical to subglobose, spike-like panicle, 60-250 mm long, light green or straw-coloured, often tinged purple; rachis cylindrical, ribs rounded, involucral stumps present or absent, scaberulous to rarely hairy; involucre of up to 20 slender, glabrous bristles, free to base; bristles unequal, mostly shorter to as long as spikelet; spikelets solitary, sessile. Spikelet 4-6 x 1 mm; glumes unequal; lower glume minute, up to 1 mm long or absent; upper glume 1/4-1/3 length of spikelet, acute or acuminate. Florets 2; lower floret male or sterile, lemma 3/4 to as long as spikelet, acute, palea absent; upper floret bisexual, lemma thinly coriaceous and similar to lower lemma; anther 1.6-1.8 mm long; without tuft of hairs at apex. Flowering time Nov.-May.
Tufted, reed-like perennial 800-2 500 mm high; rhizome creeping, often branched. Leaf blade 250-600 x 4-11 mm, hard, flat or sometimes rolled, glabrous or variably pilose; ligule a fringe of hairs. Inflorescence 120-250 mm long, light green or straw-coloured, often tinged purple; rachis cylindrical, ribs rounded, involucral stumps present or absent, scaberulous to rarely hairy; involucre sessile, of up to 20 bristles, bristles unequal, mostly longer than spikelet, one thicker and longer, glabrous, scabrid; spikelet solitary, sessile; culm scabrid, rarely long hairy below inflorescence. Spikelet 4-6 x 1 mm; lower glume minute, up to 1 mm long, or absent; upper glume 1/4-1/3 the spikelet length, acute or acuminate; lower lemma 3/4 to as long as spikelet, acute; lower palea absent; upper lemma thinly coriaceous, similar to lower lemma; anthers 1.6-1.8 mm long; without a tuft of hairs at apex.
Reed-like perennial from a creeping rhizome; culms 0.6–5 m. high, often robust, scaberulous or occasionally pubescent below the panicle; nodes brown.. Leaf-blades 10–45 cm. long, 2–10(–15) mm. wide, hard, glaucous, often convolute, with a filiform tip.. Panicle linear, often elongated, 6–40 cm. long; rhachis cylindrical with rounded ribs, with or without peduncle-stumps, scaberulous or sometimes pubescent; involucre enclosing 1 sessile spikelet, without a distinct stipe at the base; bristles glabrous, the longest 5–20 mm.. Spikelets narrowly elliptic to narrowly ovate, 2–6 mm. long, acute to acuminate; lower glume up to 1 mm. long, usually obtuse; upper glume 1/8–1/4 as long as the spikelet, usually acute to acuminate, occasionally obtuse; lower lemma ♂ or barren, 3/4 to as long as the spikelet; upper lemma scarcely differing in texture from the lower.
Perennial, tufted, up to 2.5 m high. Rhizome creeping, often branched. Leaf blades 250-600 mm long, 4-11 mm wide. Spikelets 4-6 mm long, 1 mm wide. Inflorescence light green or straw-coloured, often tinged with purple, 120-250 mm long; involucres of up to 20 bristles which are mostly as long as spikelets, 1 bristle longer than the rest; lower glume minute or absent, upper glume a quarter to a third the length of spikelet; lower floret reduced to a lemma; female-fertile (upper) lemma similar to lower lemma.
Perennial, up to 1.7 m tall. Leaves linear; ligule a fringe of hairs. Inflorescence a long, spike-like, cylindrical panicle, 120-250 mm long, involucral bristles glabrous and scabrid, mostly as long as spikelets, free at base, falling with spikelets (in Setaria bristles remain on axis). Spikelets 4-6 mm, straw-coloured; glumes unequal, upper reaching up to a quarter as long as spikelet; 2-flowered, lower floret male or sterile; upper floret similar in texture to rest of spikelet.
Panicle 6–40 cm. long, linear; rhachis cylindrical with rounded ribs, with or without peduncle stumps, scaberulous or sometimes pubescent; involucre enclosing 1 sessile spikelet without distinct stipe; bristles glabrous, the longest 5–20 mm.
Perennial to 1.7 m. Leaves linear. Spikelets 4-6 mm long, in a congested, cylindrical panicle 12-25 cm long, straw-coloured, involucral bristles as long as spikelets.
Inferior glume up to 1 mm. long, the superior 1/8–1/4 length of spikelet.
Culms 0.6–5 m. high, often robust, rarely-pubescent below the panicle.
Leaf laminae 2–10(15) mm. wide, hard, flat or sometimes convolute.
Inferior lemma 3/4 to as long as spikelet, acute.
Reed-like perennial from a creeping rhizome.
Superior lemma similar to the inferior.
Spikelets 2–6 mm. long.