Kryptoperidinium foliaceum Lindemann

Kryptoperidinium foliaceum (F. Stein) Lindemann

(Figures 15–20)

Cells were pale brown in colour with a red eye spot and a central nucleus (Figures 15 and 16). Cells were 30–50 µm long and 28–45 µm wide. Cells were strongly dorso-ventrally flattened and broadly circular in dorsal view (Figures 15 and 16). The cingulum was median and not offset (Figure 15). Cells had very thin thecae on which it was very difficult to discern any thecal tabulation (Figure 17) although it has been reported by Figueroa et al. (2009). Cysts were formed within our cultures – these were ovoid to spherical in dorsal view (Figure 18) and narrowly elliptical in apical view (Figures 19 and 20). Two strains from the Caspian were successfully sequenced which match those for Kryptoperidinium foliaceum (Figure 32).