Slender annual or ephemeral plants (7–) 12.5–20 (–44) cm high; base unthickened, glabrous. Culms branched, often fastigiate, glabrous or pilose or hispid with tubercle-based hairs; nodes glabrous or bearded. Leaves mainly basal, pilose or hispid with tubercle-based hairs; sheaths more than half as long as culm internodes; blade to 2.5 cm long, setaceous. Inflorescences of few distant spikelets, loose, 1.5–7 cm long, 0.5–5 cm wide. Glumes 3–4.3 (–6) mm long, muticous or awn-like, 5–7-nerved, hispid to hirsute or pilose with tubercle-based hairs on submargins and/or between nerves, or sometimes glabrous and smooth. Florets shorter than glumes. Callus entirely bearded. Lemma 1.8–4 mm long, awned, 5–7-nerved, without grooves, (sometimes sparsely) hairy at base or along midnerve in lower half, glabrous and smooth above or scaberulous near apex, with submargins ciliate in lower 1/2–2/3; awn (6.5–) 13–22 mm long. Palea entire or notched, muticous, sparsely or densely hairy between keels in lower 1/3–1/2, glabrous and smooth above. Caryopsis 1.5–2 mm long.
Commonly inskeletal, sandy, stony or pebbly soil in association with sandstone,conglomerate or laterite; also recorded from low-lying and other seasonallymoist sites.
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