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Very loosely tufted annual, 150-800 mm high; culms decumbent at base, rooting from lower nodes. Leaf blade 40-150 x 3-10 mm; ligule an unfringed membrane. Inflorescence subdigitate on a relatively long central axis, of 5-15 racemes; rachis triquetrous, broadly winged, glabrous to scaberulous; pedicels triangular, scaberulous; spikelets paired. Spikelets 1.5-2.0 mm long, dorsiventrally compressed; lower glume obscure or an ovate scale up to 0.2 mm long; upper glume shorter to as long as spikelet, 3-nerved, pubescent; internode absent. Florets 2; lower floret sterile, lemma lanceolate, as long as spikelet, 7-nerved, pubescent; upper floret bisexual, lemma light to dark brown tinged purple, margins flat and covering most of palea. Flowering time Dec.-May.
Very loosely tufted or creeping annual 150-800 mm high; culms decumbent at base, rooting from lower nodes. Leaf blade 30-150 x 3-10 mm. Inflorescence subdigitate on a relatively long central axis 25-50 mm long, with 5-15 racemes 35-100 mm long; rachis triquetrous, broadly winged, glabrous to scaberulous; pedicel triangular, scaberulous; spikelets paired. Spikelet 1.5-2.2 mm, hairy; lower glume obscure or an ovate scale up to 0.2 mm long; upper glume shorter to as long as spikelet, 3-nerved, pubescent; internode absent; lower lemma as long as spikelet, 7-nerved, nerves smooth, hairy; upper lemma light to dark brown, tinged purple; anthers 1.2-1.4 mm long.
Annual, very loosely tufted, up to 0.8 m high. Leaf blades 40-150 mm long, 3-10 mm wide. Culms decumbent at base, rooting from lower nodes. Spikelets 1.5-2.0 mm long, 0.5 mm wide. Inflorescence paniclelike, racemes 35-100 mm long, 5-15, subdigitate on a relatively long central axis 25-50 mm long; lower glume obscure or an ovate scale up to 0.2 mm long; upper glume and lower lemma almost glabrous.
Leaf laminae 3–13 × 0.3–0.8 cm., linear, flat, loosely to densely hairy and sometimes scaberulous on both surfaces, often with a few bulbous based bristles near the base, scabrous along the margin.
Inflorescence composed of (2)3–14 racemes, (3)5–10 cm. long, sometimes in a basal whorl of 3–5 racemes, the other racemes solitary along the well developed common axis.
Superior glume 2/3–3/4 of the spikelet, sometimes nearly as long, 3-nerved, appressed hairy, hairs fine, smooth, acute, hyaline.
Superior lemma as long as to somewhat shorter than the spikelet, acute, pale to dark brown, often purplish tinged.
Spikelets 1.7–2.1 mm. (subsessile spikelets) and 2.0–2.3 mm. long (pedicelled spikelets), oblong-lanceolate.
Rhachis triquetrous, winged, up to 0.5 mm. broad, smooth to scaberulous, with scabrous margins.
Leaf sheaths loosely to densely covered with bulbous based bristles, smooth to scaberulous.
Pedicels 2-nate, 0.5–3 mm. long, triangular, scabrous, slightly broadened at the apex.
Culms creeping to ascending, 20–50 cm., glabrous, nodes dark and glabrous.
Inferior lemma as long as the spikelet, oblong, 7-nerved, appressed hairy.
A slender annual grass. It grows 1 m tall. It can form roots at the nodes.
Inferior glume short, truncate, nerveless, often poorly developed.
Ligule up to 2.5 mm. long, truncate, entire.
A creeping or decumbent annual.
