This taxon is distinct within Navicula.

LM scalebar = 10 µm
Length Range
77.6-86.9 µm
Width Range
14.7-15.4 µm
Striae in 10 µm
9-9.5 in the valve center, 11-12 at the ends
Navicula hasta LM3
Navicula hasta LM1
Navicula hasta LM2
Navicula hasta LM5
Navicula hasta LM4
Navicula hasta LM6
Navicula hasta LM3 Navicula hasta LM1 Navicula hasta LM2 Navicula hasta LM5 Navicula hasta LM4 Navicula hasta LM6
Length Range
48-53 µm
Width Range
9-10 µm
Striae in 10 µm
8-9 at the center, 11-12 towards the apices
Navicula rhynchocephala LM2 Navicula rhynchocephala LM3 Navicula rhynchocephala LM4 Navicula rhynchocephala LM1 Navicula rhynchocephala LM5
Length Range
45-75 µm
Width Range
10.3-13.5 µm
Striae in 10 µm
10-12
Navicula flatheadensis LM6 Navicula flatheadensis LM5 Navicula flatheadensis LM4 Navicula flatheadensis LM3 Navicula flatheadensis LM2 Navicula flatheadensis LM1