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Loosely tufted perennial 200-800 mm tall, erect or geniculate; rhizome robust, extensively creeping. Leaf blade 100-400 x 4-7 mm, flat or folded, tip filiform, usually sparsely to densely pilose; ligule a fringe of hairs. Inflorescence 30-50 mm long, linear, purple; rachis cylindrical, ribs rounded, involucre stumps distinct, scaberulous; involucre enclosing 1 spikelet; bristles fine, one thicker and longer, glabrous, scaberulous; culm scabrid (prickles large) below inflorescence. Spikelet 2.5-5.0 x 1 mm; lower glume absent or up to 1 mm long; upper glume 1/4-1/5 as long as spikelet; lower lemma usually up to 3/4 the spikelet length, abruptly cuspidate, awned, awn to 0.5-1.5 mm long, lower palea absent; upper lemma acuminate or with awn up to 1 mm long; anther 1.4-1.6 mm long, with a few hairs or a minute tuft at apex.
Loosely tufted perennial, 100-800 mm high, erect or geniculate; rhizome extensively creeping, robust. Leaf blade 100-400 x 2-7 mm, flat or folded, usually sparsely to densely pilose; ligule a fringe of hairs. Inflorescence a cylindrical to subglobose, spike-like panicle, 20-100 mm long, purple; rachis cylindrical, ribs rounded; peduncle stumps distinct, scaberulous; involucre enclosing 1 spikelet; bristles fine, glabrous, scaberulous, one thicker and longer. Spikelet 2.5-5.0 x 1 mm; glumes unequal; lower glume absent or up to 1 mm long; upper glume 1/4-1/5 as long as spikelet. Florets 2; lower floret male or sterile, lemma abruptly acuminate, palea absent; upper floret bisexual, lemma acuminate or with mucro up to 1 mm long; anther 1.4-1.6 mm long, with a few hairs or minute tuft at apex. Flowering time Oct.-June.
Perennial; up to 0.8 m high; loosely tufted. Leaf blades 100-400 x 4-7 mm; flat or folded; sparsely to densely pilose. Flowers: inflorescence a spike; 30-50 mm long; purple; involucre of up to 20 bristles enclosing 1 spikelet; one bristle longer than rest; spikelets 3 x 1 mm; lower glume absent; upper glume 1/5-1/4 as long as spikelet; lemmas mucronate to nearly awned; lower lemma usually up to 3/4 spikelet length; abruptly cuspidate; awned; awn up to 0.5-1.5 mm long; anther lobes with minute tuft of hairs at apex.
Perennial, tufted, up to 0.8 m high. Leaf blades 100-400 mm long, 4-7 mm wide. Spikelets 3 mm long, 1 mm wide. Inflorescence 30-50 mm long, purple; lower glume absent; upper glume a fifth to a quarter as long as spikelet; lemmas mucronate to nearly awned; anther lobes with a minute tuft of hairs at apex.
Panicle 2–15 cm. long, linear to narrowly oblong; rhachis cylindrical with rounded ribs and distinct peduncle stumps, scaberulous; involucre enclosing 1 sessile spikelet, the base truncate; bristles fine, glabrous, the longest 5–14 mm.
A grass that forms dense tufts. It grows 1 m tall. It can have long rhizomes or underground stems. The leaf blades are 10-40 cm long and 4-7 mm wide. The tip of the leaves are long and rolled. The flowers are in a short dense spike.
Inferior lemma (1/4)1/3–2/3(3/4) length of spikelet, abruptly acuminate to cuspidate, usually with a mucro 0.5–1.5 mm. long.
Inferior glume suppressed or up to 1 mm. long, the superior up to 1/4 length of spikelet, acute to emarginate.
Like P. macrourum but most bristles to twice as long as spikelet, panicle 30-50 mm long, spikelets 3 mm long.
Culms 10–150 cm. high, erect or geniculate, glabrous or pubescent below panicle.
Superior lemma thinly coriaceous, acuminate or with a mucro up to 1 mm. long.
Leaf laminae 2–8 mm. wide, flat or convolute.
Anther tips smooth to distinctly penicillate.
Loosely tufted rhizomatous perennial.
Spikelets 2.5–5 mm. long.
