四生臂形草(原变种) si sheng bi xing cao (yuan bian zhong)

Panicum subquadriparum Trinius, Gram. Panic. 145. 1826; P. pseudodistachyum Hayata; Urochloa subquadripara (Trinius) R. D. Webster.

Leaf sheaths and blades usually glabrous, rarely with tubercle-based hairs on sheaths or pubescent on both surfaces of blades. Pedicels glabrous. Spikelets elliptic, broadest in middle, glabrous. Fl. and fr. Sep–Nov.

Mountain slopes, grassy places, fields, open forests. Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hunan, Jiangxi, Taiwan [tropical Asia, Pacific Islands].