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.
Podzorski A.C. (1985): "An illustrated and annotatet chack-list of diatoms from the Black River Waterways, St. Elizabet, Jamaica", p.53, Pl.20, fig.13; Patric R. & Ch.W. Reimer (1966):"The diatoms of the United States", Vol.2, p.131; Krammer K. & Lange-Bertalot H. (1997): "Susswaserflora von Mitteleuropa", Vol.1, pg.361, 362, Fig.156:1-11, Fig.154:26,27;
Gomphonema lanceolatum (Ehrenberg 1841), Gomphonema grunowii (Patrik 1975)
Valves show wide range of morphologies; resembles G. parvulum in valve shape and in the character of its pores