FIGURES 19–23 in A new Eunotia (Bacillariophyta: Eunotiales) species from Karst formations of southern China

FIGURES 19–23. Eunotia sudeticiformis sp. nov. Wider morphotype. SEM, external views. 19. Valve view of entire valve, showing distal raphe ends extending slightly onto the valve face. Striae occur in narrow channels. Distinctly larger poroids are present near the distal raphe ends. Scale bar = 1 μm. 20. Valve apex showing areolae have thin, narrow rims. Two larger openings are evident near the distal raphe end. Scale bar = 1 μm. 21. Valve center with uniseriate striae that extend onto the dorsal mantle. A few short striae along the dorsal margin are interspersed amongst the rest of the striae. Areolae are bordered by a thin rim. Scale bar = 1 μm. 22. Girdle view showing the numerous cingula, each bearing several rows of small poroids. Striae are present on the mantle, and raphe has dilated proximal ends. Scale bar = 1 μm. 23. Closer view of valve in girdle view showing raphe branch, disorganized areolae near the raphe and distinct opening of the rimportula. Scale bar = 1 μm.