Imperata koenigii var. major Nees, Fl. Afr. Austral. Ill. 90.1841; Imperata arundinacea var. koenigii (Retzius) Bentham; I. cylindrica subsp. koenigii (Retizus) Tzvelev; I. cylin-drica var. koenigii (Retzius) Pilger; I. koenigii (Retzius) P. Beauvois; Saccharum koenigii Retzius.

Culm nodes often bearded, sometimes sparsely or occasionally glabrous. Leaf blades flat. Panicle slightly loose below. Spikelets 2.5–4(–4.5) mm; anthers 2–3 mm.

Open grassy places, cultivations. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Xinjiang, Xizang, Yunnan, Zhejiang [Afghanistan, India, Indonesia, Japan, Korea, Malaysia, Myanmar, New Guinea, Pakistan, Philippines, Sri Lanka, Thailand, Vietnam; SW Asia (Iran), Australia].