Summary: | FIGURES 152–157. SEM micrographs of Cavinula pseudoscutiformis (Hustedt) Mann & Stickle. Figs 152–156. External view. Fig. 157. Internal view. Fig. 152. Woukatti, Finland; Figs 153–157. Ellesmere Island, Alert, White Pond, Nunavut, Canada. Scale bars: 5µm in Figs 152–154; 2 µm in Figs 155–157. Published as part of Cvetkoska, Aleksandra, Levkov, Zlatko, Hamilton, Paul B. & Potapova, Marina, 2014, The biogeographic distribution of Cavinula (Bacillariophyceae) in North America with the descriptions of two new species, pp. 181-207 in Phytotaxa 184 (4) on page 194, DOI:10.11646/phytotaxa.184.4.1, http://zenodo.org/record/5146714
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