FIGURES 263–268 in The morphology and molecular phylogenetics of some marine diatom taxa within the Fragilariaceae, including twenty undescribed species and their relationship to Nanofrustulum, Opephora and Pseudostaurosira

FIGURES 263–268. Scanning electron micrographs of Gedaniella panicellus (type material SZCZCH1350, culture). Figs 263–264. External views, showing branched volae (indicated by arrow), originating from apical side of areolae. Figs 265–266. Internal views, showing the absence of rimoportulae and relatively large foot pole APF (indicated by arrow) and small head pole APF (indicated by arrowhead). Fig. 267. Plain copulae. Fig. 268. Numerous broken valves, showing relatively large foot APFs (indicated by arrowhead).