Slender annual or short-lived perennial plants (6–) 17–68 cm high; base unthickened, glabrous; culms and leaves thin, densely hispid (with tubercle-based hairs) or glabrous. Culms usually simple, sometimes fastigiately branched; nodes (2–) 3–6, glabrous or hairy. Leaves: sheaths shorter or longer than culm internodes; blade to 20 cm long, setaceous. Panicles open or loosely contracted, 2.5–7 cm long, 0.5–5 cm wide. Glumes 4.5–8 mm long, muticous or rarely aristulate, strongly 9–13-nerved, hispid between nerves with tubercle-based hairs or glabrous and smooth. Florets subequal to glumes (usually exserted by up to 2 mm). Callus with hairs on back only (glabrous on front but concealed by hairs). Lemma 4.5–9 mm long, awned membranous, 5–7-nerved, without grooves, hirsute on back near base in two longitudinal rows, long-ciliate on submargins almost to lemma apex, otherwise glabrous and smooth or scaberulous, pubescent on inside near apex; awn 0.5–6 mm long. Palea with entire or bifid beak to 0.8 mm long, muticous, hirsute near base or in the lower half in a median row, otherwise glabrous and smooth or scaberulous. Caryopsis 2.5–4.3 mm long.
Recordedhabitats include deep or skeletal, sandy or podsolic, pebbly or gravelly orstony soils over sandstone or laterite, on sandplains, hillslopes or ridges, seasonallywet flood plains, depression flats, creek beds and valley floors, and sometimesdisturbed ground.
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