FIGURES 37–43 in Identity and typification of Diploneis ostracodarum, Diploneis budayana and Diploneis praeclara (Bacillariophyta)

FIGURES 37–43: Diploneis praeclara, SEM micrographs. Fig. 37. External view of corroded valve. Fig. 38. External view of the central area with proximal raphe ending. Fig. 39. Broken valve showing the external and internal valve structure. Fig. 40. Internal view of the whole valve. Fig. 41. Internal view of the valve showing the proximal and distal raphe ends. Fig. 42. Distal raphe ending with terminal fissures. Fig. 43. External valve view. Scale bars = 10 µm (Fig. 43); 5 µm (Figs 37–42).