FIGURES 1–36 in Planothidium incuriatum sp. nov. a widely distributed diatom species (Bacillariophyta) and type analysis of Planothidium biporomum

FIGURES 1–36. Planothidium biporomum and Planothidium incuriatum sp. nov. LM views. Figs 1–18. Planothidium biporomum. Valve views. Savannah River, Georgia, U.S.A., ANSP G.M.C. 3521(3). Figs 1–13. Rapheless valves. Figs 14–18. Raphe valves. Figs 19–36. Planothidium incuriatum sp. nov. Valve views. 'Croix au Buis' creek (Yvette River basin, Magny-les-Hameaux, France), BR- 4315. Figs 19–27. Rapheless valves. Figs 28–36. Raphe valves. Fig. 21. Holotype designated. '=' signal indicates the valves of the same frustule. Scale bar represents 10 µm.