Compare Stauroforma exiguiformis
Fragilariforma virescens valves are greater in length and width and have rostrate ends. In girdle view, striae extend across the valve mantle.
LM scalebar = 10 µm
Length Range
4-22 µm
4-22 µm
Width Range
3-4 µm
3-4 µm
Striae in 10 µm
16-20
16-20
Length Range
15-60 µm
15-60 µm
Width Range
6.5-7.0 µm
6.5-7.0 µm
Striae in 10 µm
20-22
20-22
