Silva, M. B. A., J. A. S. Osti, D. C. Bicudo, and G. C. Marquardt. “Achnanthidium Guarulhense Sp. Nov. (Achnanthidiaceae, Bacillariophyta), a New Diatom Species from a Conservation Unit in Southeast Brazil”. Phytotaxa, vol. 640, no. 3, Mar. 2024, pp. 275-83, doi:10.11646/phytotaxa.640.3.5.