Racemes 2–11 on an axis up to 9 cm. long, each raceme 4–12 cm. long, the spikelets borne singly on a rhachis 2–3 mm. wide.
Leaf laminae 8–30 cm. long, 8–27 mm. wide, narrowly lanceolate, often broadly rounded at the base, acute at the apex.
Spikelets 2–3 mm. long, resembling P. scrobiculatum.
Perennial.