Compare Frustulia pseudomagaliesmontana
Frustulia magaliesmontana is greater in length (55-70 μm) and is not known to have been reported in North America. Frustulia cassieae is also larger and has apices that are not protracted.
LM scalebar = 10 µm
Length Range
30-45.7 µm
30-45.7 µm
Width Range
5.8-6.2 µm
5.8-6.2 µm
Striae in 10 µm
40-42
40-42
