Compare Gomphonema manubrium
Compare
Gomphonema ventricosum is larger, has a broader headpole and has distinctly punctate striae.
Gomphonema mehleri is less robust, with a narrower axial area and lower areola density.
Gomphonema reimeri has a more lanceolate valve outline.
LM scalebar = 10 µm
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
Gomphonema mehleri
Length Range
33-59 µm
33-59 µm
Width Range
9.4-12.5 µm
9.4-12.5 µm
Striae in 10 µm
7.5-9 at center; 11-12 at headpole; 12-13 at footpole
7.5-9 at center; 11-12 at headpole; 12-13 at footpole
