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.
Reichardt, E. (1999). Zur Revision der Gattung Gomphonema: Die Arten um G. affine/insigne, G. angustatum/micropus, G. acuminatum sowie gomphonemoide Diatomeen aus dem Oberoligozan in Bohmen. Iconographia Diatomologica 8, pp. 43-45, 162, 163 [t.50:2-3], 164, 165 [t.51:1-3,5,6]
Valves have very linear appearance, with the headpole slightly broader than the centre; more severe constriction than in G. acuminatum and considerably longer