Panicum hanningtonii Stapf

Robust annual; culms 90–150(–180) cm. high, unbranched or very rarely branched, erect or occasionally decumbent at the base and rooting at the lower nodes.. Leaf-sheaths glabrous, the upper ones rarely hispid; blades linear, 15–45 cm. long, 8–18 mm. wide, amplexicaul at the base, glabrous, acuminate.. Panicle oblong, 20–35 cm. long, erect, much branched, dense.. Spikelets ovate, (2–)2.5–3 mm. long, often purplish, glabrous; lower glume separated from the rest of the spikelet by a short internode, broadly ovate, 1/2–2/3 the length of the spikelet, 1–3-nerved, acuminate; upper glume ovate, (5–)7-nerved, acuminate; lower lemma 9-nerved, male, its palea well developed; upper lemma pale and glossy.