Welcome to the Diatom Image Database! The Periphyton Group at Florida International University created and maintains the Diatom Image Database, which includes over 980 diatom taxa found in the greater Everglades region of south Florida. Please send questions or comments about the Diatom Image Database to Franco Tobias .
You can also click on one of labeled areas on the map to browse by location.
Simonsen (1992). pp. 72, 73, pl. 69, figs 9 – 11
Valves semi-elliptic with protracted rostrate to sub-capitate ends. Dorsal margin convex, slightly fattened at the center. Ventral margin straight. Raphe branches straight, proximal and distal ends deflected dorsally. Axial area narrow, linear. Central area transversely expandedin form of rectangular fascia reaching the middle portion of the dorsal part of the valve. Dorsal striae composed of series of transapical dash-like openings, slightly radiate, interrupted at the center by a transapical fascia and longitudinal hyaline areas. Ventral striae not resolvable under LM.
Found in surface sediments at Sprigger Bank, Florida Bay with water depth < 2m and salinity ranging between 30 - 40ppt