Carneiro, V.A.R., Cocentino, A.D.L.M., Vasconcelos, E.R.T.P.P.D., Oliveira, M.C. and Cassano, V. 2026. Chamaedoris xavieri (Boodleaceae, Chlorophyta), a new deep-water species from the northeast coast of Brazil. Phytotaxa. 759, 1 (May 2026), 1–15. DOI:https://doi.org/10.11646/phytotaxa.759.1.1.