狗牙根(原变种) gou ya gen (yuan bian zhong)

Panicum dactylon Linnaeus, Sp. Pl. 1: 58. 1753.

Spikelets 2–2.5 mm, with 1 bisexual floret. Fl. and fr. most of the year. 2n = 18, 36.

Open disturbed situations, roadsides, field margins, and cultivated as a lawn grass; sea level to 2500 m. Fujian, Guangdong, Hainan, Hubei, Jiangsu, Shaanxi, Sichuan, Taiwan, Yunnan, Zhejiang [tropical and warm-temperate regions of the world].