Compare Fragilaria amphicephaloides
Fragilaria radians has wider valves with a lower stria density (9 to 11 in 10 µm, Hofman et al. 2011). Fragilaria tenera has narrower, lanceolate valves with a higher stria density.
LM scalebar = 10 µm
Length Range
42.3-71.4 µm
42.3-71.4 µm
Width Range
2.6-3.9 µm
2.6-3.9 µm
Striae in 10 µm
11-13
11-13
Length Range
50-75 µm
50-75 µm
Width Range
2.0-2.5 µm
2.0-2.5 µm
Striae in 10 µm
15-17
15-17
