Hammesfahr, A., P. Witham, C. Campbell, and N. Snow. “Another Confrmation of Cyperus Flavescens (Cyperaceae) for Kansas, U.S.A.”. Journal of the Botanical Research Institute of Texas, Vol. 14, no. 2, Dec. 2020, pp. 411-2, doi:10.17348/jbrit.v14.i2.1019.