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Navicula trivialis is lanceolate in shape with slightly rostrate ends. Valves of N. cryptocephala are more narrow (4-6 µm wide) and striae are more fine (16 in 10 µm). Navicula whitefishensis has larger valves, a larger central area and more radiate striae than N. trivialis.

LM scalebar = 10 µm
Navicula trivialis LM6 Navicula trivialis LM5 Navicula trivialis LM4 Navicula trivialis LM2 Navicula trivialis LM1
Length Range
28-44 µm
Width Range
8-10 µm
Striae in 10 µm
12

Navicula whitefishensis

L.L.Bahls 2012

Navicula whitefishensis LM5 Navicula whitefishensis LM4 Navicula whitefishensis LM3 Navicula whitefishensis LM1 Navicula whitefishensis LM2
Length Range
46-60 µm
Width Range
11.3-14.2 µm
Striae in 10 µm
12-14

Navicula cryptocephala

Kütz. 1844

Navicula cryptocephala LM4 Navicula cryptocephala LM6 Navicula cryptocephala LM2 Navicula cryptocephala LM7 Navicula cryptocephala LM5 Navicula cryptocephala LM1 Navicula cryptocephala LM3
Length Range
21-34 µm
Width Range
5.2-6.5 µm
Striae in 10 µm
15-17