Scientific name: Kyllinga cylindrica Nees, 1834
English name:
Vietnamese name: Bạc đầu trụ; Cú hoa một rưỡi
Other name: Kyllinga sesquiflora Torr. 1836 (CCVN, 3: 701). - Cyperus sesquiflorus (Torr. ) Mattf. &Kuk. 1936 (CCNVN, 2:797). - Cyperus sesquiflorus var. cylindricus (Nees) Kuk. 1936 (CCNVN, 2:797). - Kyllinga cylindra var. subtriceps Nees, 1834 . - Kyllinga odorata ssp. cylindrica (Wight) T. Koyama sec. Phamh. 1993 (CCVN, 3:700). - Cyperus sesquiflorus var. subtriceps (Nees) T. Koyama, 1961;