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 .
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Amphora ostrearia var. lineata
(Brebisson ex Kutzing) Cleve
Hartley B. (1996). An Atlas of British Diatoms, Pl.21, fig.5;
Amphora vitrea (Cleve, 1868), Amphora novacaledonica (Grunow, 1875), Amphora porcellus (Kitton, 1876), Amphora treubii (Leuduger-Fortmorel, 1892), Amphora ostrearia var. porcellus (Kitton, 1876 in Schmidt 1874-) De Toni, 1891)
Valves semi-lanceolate with acutely rounded apices. Dorsal margin acutely rounded; ventral margin straight. Raphe biarcuate with dorsally bent distal ends and straight or slightly ventrally oriented proximal ends. Central pores well visible under LM. Axial area narrow, linear; central area on the dorsal side extended into narrow fascia reaching the edge of the valve. Transapical striae on the dorsal side slightly radiate compose with puncta that form almost straight longitudinal lines, which differ that variation from the type. Dash-like ventral striae very dense, slightly radiate.