Plagiogramma cf. pulchellum Greville, 1859

Park, Joon Sang, Lobban, Christopher S. & Lee, Kyun-Woo, 2018, Diatoms associated with seaweeds from Moen Island in Chuuk Lagoon, Micronesia, Phytotaxa 351 (2), pp. 101-140 : 105

8. Plagiogramma cf. pulchellum Greville Fig. 11

References: Schmidt et al. (1874 –1959), pl. 209, fig. 32; Stidolph et al. (2012), pl. 43, figs 122 and 123.

Samples: Moen3_ Sargassum

Dimensions: 24.2 μm long, 8.4 μm wide; 9 striae in 10 μm, 12 areolae in 10 μm.

Diagnostics: Valves lanceolate with broadly round apices. Areolae distinct and coarse. Striae slightly radial. Sternum very narrow, straight to each valve apices. A transverse hyaline stauros-like area present.

Figures

FIGURES 9–22. Eleven diatom species of Urneidophycidae and Fragilariophycidae. Figs 9 and 10. Talaroneis sp. Fig. 11. Plagiogramma cf. pulchellum. Fig. 12. Psammodiscus nitidus. Fig. 13. Cyclophora tenuis. Fig. 14. Bleakeleya notata. Figs 15 and 16. Tabularia parva. Figs 17 and 18. Hyalosynedra laevigata. Fig. 19. Podocystis spathulata. Fig. 20. Neofragilaria anomala. Fig. 21. Opephora sp. Fig. 22. Grammatophora marina. Scale bar = 10 μm.