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Inflorescence composed of (2)5–14 racemes, 12–20 cm. long, erect to patent, 3–5 in a whorl, the superior ones often solitary along a short common axis, sometimes in a second whorl of 2–4 racemes.
Inferior lemma as long as the spikelet, oblong, with a flattened, curved acuminate apex, 7-nerved, appressed hairy, sometimes with a few bulbous based bristles.
Leaf laminae 5–12 × 0.3–0.7 cm., linear, flat, scabrous on both surfaces, with bulbous based bristles near the base, scabrous along the margin.
Superior glume c.1/2 of the spikelet, oblong triangular, 3-nerved, subglabrous to appressed hairy, hairs very fine, white, acute.
Superior lemma conspicuously shorter than the spikelet, oblong-lanceolate, acuminate, pale yellow to brown.
Pedicels 2-nate, 0.5–3.0 mm. long, triangular, scabrous, scarcely broadened at the apex.
Rhachis triquetrous, broadly winged, up to 0.8 mm. wide, smooth with scabrous margins.
Culms 30–80 (100) cm., ascending from a creeping base, glabrous, nodes dark, glabrous.
Leaf sheaths minutely scaberulous, sometimes loosely hairy.
Inferior glume oblong triangular, sometimes slightly bifid.
Spikelets 2.8–3.7 mm. long, oblong-lanceolate.
Ligule up to 2.5 mm. long, truncate to erose.
Annual 60–90 cm. high
A creeping annual.
Long stiff racemes
