Annual. Culms erect or slightly geniculate at base, 9–19 cm tall, 3–6-noded. Leaf sheaths puberulous, hairs tubercle-based; leaf blades linear, 1–3 × 0.1–0.25 cm, abaxial surface and margins loosely tuberculate-hairy; ligule ca. 0.4 mm. Raceme solitary, 1.5–2.5 cm; rachis flattened, ca. 1 mm wide, margins densely ciliate. Spikelets oblong, ca. 3 mm, reddish brown; glumes papery, lower glume densely ciliate along keel, densely pubescent near margins; upper glume densely ciliate along keel, narrowly winged along upper 1/2 of keel; upper lemma ca. 2 mm; awn 8–10 mm, geniculate. Anthers ca. 0.8 mm.

This species is related to Dimeria sinensis, but is a smaller plant, with the upper glume winged only in the upper third.

* Damp waste ground. Guangdong.