Cocconeis ornata W. Gregory Figs 22–26

Ref. illus.: Gregory 1857, pl. IX (1), fig. 24; Peragallo & Peragallo 1897 –1908, pl. 4, figs 13–15; Montgomery 1978, pl. 61, figs A–D; Riaux-Gobin et al. 2014, figs 9–14

Samples: GU44AU-2

Dimensions: Length 19 µm, width 15 µm, striae ca 10 in 10 µm

Diagnostics: SV: striae coarsely uniseriate but sometimes branching towards the margin, striae interrupted by a longitudinal hyaline line; margin with parallel rows of papillae. RV not seen.

Comments: A few specimens in this sample. Gregory (1857) was charmed by the “rich ornate aspect” of this “beautiful” species, which does indeed appear ornate, especially in SEM (Fig. 27). The original drawing did not do it justice.