Compare

Navicula capitatoradiata is wider and the apices are more rostrate. Navicula radiosiola is very similar in all aspects, except for the striae near the apices. The striae of N. radiosiola are nearly parallel near the apices. Navicula arkona valves are longer. Navicula subalpina and N. krammerae are more narrow.

LM scalebar = 10 µm
Navicula schweigeri LM5 Navicula schweigeri LM4 Navicula schweigeri LM3 Navicula schweigeri LM2 Navicula schweigeri LM1 Navicula schweigeri LM6
Length Range
39-49 µm
Width Range
7.5-8.6 µm
Striae in 10 µm
12-14

Navicula capitatoradiata

H.Germ. ex Gasse 1986

Navicula capitatoradiata LM2 Navicula capitatoradiata LM1 Navicula capitatoradiata LM5 Navicula capitatoradiata LM4 Navicula capitatoradiata LM3
Length Range
30-37 µm
Width Range
7.0-7.7 µm
Striae in 10 µm
14-15

Also compare to

Navicula radiosiola

Lange-Bert.

Navicula arkona

Lange-Bert. and Witkowski

Navicula krammerae

Lange-Bert.

Navicula subalpina

E.Reichardt