Cardoso, P. H., V. I. D. R. Valério, L. Menini Neto, and F. R. G. Salimena. “Verbenaceae in Espírito Santo, Brazil: Richness, Patterns of Geographic Distribution and Conservation”. Phytotaxa, vol. 484, no. 1, Feb. 2021, pp. 1–43, doi:10.11646/phytotaxa.484.1.1.