Lai, G. G., Ector, L., Padedda, B. M., & Wetzel, C. E. (2021). Planothidium marganaiensis sp. nov. (Bacillariophyta), a new cavum-bearing species from a karst spring in south-western Sardinia (Italy) . Phytotaxa, 489(2), 140–154. https://doi.org/10.11646/phytotaxa.489.2.3