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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(Ehrenberg) W. Smith
Podzorski, A. C. (1985). An Illustrated and Annotated Check-List of Diatoms from the Black River Waterways, St. Elizabeth, Jamaica. in: Bibliotheca Diatomologica 7, pp. pp. 59-60; 136-137 (pl.24:4)
Synedra scalaris Ehr. 1843; Nitzschia scalaris (Ehr.) W. Sm. 1853; 8 Nitzschia scalaris var. minor Grunow in Cleve & Grunow 1880
Frustules and valves typically linear with bluntly rounded to acute ends, sometimes widened towards the ends to form weakly clavate apices; keel very distinct, broad, with fibulae (3-5 in 10µm) of irregular length extending across the valve, but not reaching the opposite side; transapical striae distinctly punctate; length is 150-820µm, breadth is 18-26µm; striae count is 9-10 in 10µm; Krammer & Lange-Bertalot (1991) give lower length and breadth values (150µm and 13µm, respectively) for this species; keel is described to be eccentric, and striae count can reach as high as 13 in 10µm