Annual. Culms tufted, shortly stoloniferous at base, 15–20 cm tall, glabrous. Leaf sheaths subcompressed, glabrescent; leaf blades 3–5 × 0.2–0.4 cm, sparsely pilose; ligule ca. 0.4 mm, truncate. Inflorescence subdigitate; racemes 2–4, erect, slender, 3–5 cm; spikelets ternate; rachis winged, 0.8–1 mm broad, wing broader than midrib, margins scabrous. Spikelets oblong-elliptic, 1.3–1.5 mm, pale green, apex acute, hairs white becoming dirty yellow, verrucose, often with coiled tips; lower glume absent; upper glume 1/4–1/2 as long as spikelet; lower lemma elliptic, 5–7-veined, pilose, obtuse; upper lemma purplish black at maturity, elliptic-ovate, subequaling lower lemma. Anthers 0.3–0.5 mm. Fl. and fr. autumn.
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