Figure 7

Scanning electron micrographs of Ostreopsis lenticularis cells from field samples showing the hypothecal tabulation. (A) Left lateral to antapical view. (B) Detail of the ventral area showing three sulcal plates, the posterior (Sp), the anterior right (Sda) and the anterior left (Ssa) sulcal plate. (C,D) Antapical view, note the different cell shapes. Scale bars = 20 µm, except B: 10 µm.