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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Mastogloia smithi var. lacustris
Krammer K. & Lange-Bertalot H. (1997): "Susswaserflora von Mitteleuropa", Vol.1, pg.434, Fig.201:1, 6;
Valve is more generally linear-lanceolate rather than elliptical-lanceolate; the striae are slightly coarser and more radiate than in var. smithii; central area is larger and more rectangular, with the lateral margins extending to the outer border of the loculi (6-8 in 10µm); other features are as in var. smithii; length is 20-45µm, breadth is 8-11µm; striae count is 15-16 in 10µm (with punctae 13-15 in 10µm)
some specimens have been recorded with smaller and larger length and breadth values than is described
20 - 65 µm
8 - 16 µm
15 - 18
6 - 8