Cardoso, J.S., Lodge, D.J., Moncalvo, J.-M., Margaritescu, S., Neves, M.A. and Oliveira, J.J.S. 2026. Four new species of Hygrocybe sect. Pseudofirmae (Hygrocybaceae, Agaricales) from the Cristalino basin in the Southern Brazilian Amazon. Phytotaxa. 769, 2 (Aug. 2026), 101–122. DOI:https://doi.org/10.11646/phytotaxa.769.2.1.