Scientific name: Fimbristylis bisumbellata (Forssk.) Bubania, 1850 (CCVN, 3: 656)English name: Vietnamese name: Cói (Cỏ) quăn hai tán; Mao thư hai tánOther name: Scirpus bisumbellatus Forssk. 1775. - Fimbristylis dichotoma sensu E. Camus, 1912 (FGI, 7: 102, p.p), non Vahl (1806);