Compare Gomphonema ventricosum
Compare
This diatom has been confused with G. manubrium and Gomphoneis eriense var. variabilis due to their similar valve shapes.
Gomphonema manubrium has more narrow valves and a wider axial area.
Gomphonema ventricosum lacks longitudinal lines and has uniseriate striae, distinguishing it from species in Gomphoneis.
LM scalebar = 10 µm
Length Range
33-47 µm
33-47 µm
Width Range
10-12 µm
10-12 µm
Striae in 10 µm
11-12
11-12
Gomphoneis eriensis var. variabilis
Length Range
25-45 µm
25-45 µm
Width Range
9.5-12 µm
9.5-12 µm
Striae in 10 µm
10-13 in the center, 14-16 at the poles
10-13 in the center, 14-16 at the poles
Gomphonema manubrium
Length Range
31.9-39.9 µm
31.9-39.9 µm
Width Range
8.9-9.8 µm
8.9-9.8 µm
Striae in 10 µm
11-14 in the center valve, 14-16 at the ends
11-14 in the center valve, 14-16 at the ends