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Glushchenko, A., Tseplik, N. and Kulikovskiy, M. 2026. Planothidium krascheninnikovii sp. nov. (Achnanthidiaceae, Bacillariophyceae)—a new large-celled monoraphid species from freshwater environments of the Kamchatka Peninsula, Russia. Phytotaxa. 754, 2 (May 2026), 141–157. DOI:https://doi.org/10.11646/phytotaxa.754.2.2.