| Popis: |
Cocconeis arenicola Riznyk emend. Al-Handal & Riaux-Gob. Figs 8–9 Emended description Valve elliptical with broadly rounded apices, 24.6 × 17.7–17.9 µm. SV with narrow and linear axial area (sternum) and small round central area. Striae radiate, equidistant, composed of large and round areolae, 9–9.8 in 10 µm. Areolae 16–18 in 10 µm. Short marginal striae of smaller areolae are present. RV with straight raphe, proximal raphe endings close to each other, distal endings terminate very shortly before apices. Striae radiate, equidistant with rounded areolae, 12–16 in 10 µm. |
