Compare

Gomphonema nathorstii is wider.

LM scalebar = 10 µm
Gomphonema distans LM1 Gomphonema distans LM2 Gomphonema distans LM3 Gomphonema distans LM4 Gomphonema distans LM5 Gomphonema distans LM6 Gomphonema distans LM7
Length Range
26.1-45.6 µm
Width Range
6.0-7.2 at the valve center µm
Striae in 10 µm
9-13

Gomphonema nathorstii

Foged 1964

Gomphonema nathorstii LM1 Gomphonema nathorstii LM2 Gomphonema nathorstii LM3 Gomphonema nathorstii LM4 Gomphonema nathorstii LM5 Gomphonema nathorstii LM6 Gomphonema nathorstii LM7
Length Range
30.8-49.6 µm
Width Range
7.8-9.9 near head pole; 8.3-10.0 at the valve center µm
Striae in 10 µm
10-13