毛臂形草(原变种) mao bi xing cao (yuan bian zhong)

Panicum villosum Lamarck, Tab. Encycl. Méth. Bot. 1: 173. 1791; Brachiaria villosa var. barbata Bor; P. coccospermum Steudel; Urochloa coccosperma (Steudel) Stapf ex Reeder; U. villosa (Lamarck) T. Q. Nguyen.

Culms to 40 cm but often shorter. Leaf sheaths and blades ± pubescent. Spikelets puberulous or pubescent, upper glume and lower lemma sometimes with a subapical transverse white fringe.

Hill slopes, fields. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangxi, Shaanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Bhutan, India, Indonesia, Japan, Myanmar, Nepal, Philippines, Thailand, Vietnam; Africa].

Forms with bearded spikelets have been separated as var. barbata, but as the type of Panicum villosum itself has bearded spikelets, the autonymic variety (var. villosa) is clearly synonymous and has statutory priority.