Vega, A. J., & Dematteis, M. (2014). The transfer of Vernonia perangusta to the genus Vernonanthura (Vernonieae, Asteraceae) and the correct name for Vernonanthura phosphorica. Phytotaxa, 8(1), 46–50. https://doi.org/10.11646/phytotaxa.8.1.5