FIGURES 5‒10. Stauroneis alabamae Heiden. SEM. Figs 5‒6. External and internal valve view, respectively. Fig. 7. External view of central area showing the proximal raphe endings and the striation pattern. Fig. 8. Internal view of central area showing the stauros and the proximal raphe endings. Fig. 9. Girdle view of frustule, note the distal raphe ends and the bands. Fig. 10. Internal view of valve apex showing the helictoglossa. Scale bars = 20 μm (Figs 5, 6, 9), 5 μm (Figs 7, 8), 2 μm. (Fig. 10).

Published as part of Tusset, Eduardo A., Tremarin, Priscila I. & Ludwig, Thelma A.V., 2018, Two new Stauroneis species (Bacillariophyta, Stauroneidaceae) from midwestern karstic Brazilian formations, pp. 265-277 in Phytotaxa 358 (3) on page 268, DOI: 10.11646/phytotaxa.358.3.4, http://zenodo.org/record/13703084