Compare Gomphonella hutchinsoniana
Compare
Gomphosinica capitata has a similar outline, but lacks the four isolated stigmoids around the central area, is more strongly asymmetrically clavate, and is more finely striated.
Gomphonella calcifuga lacks broadly rostrate to subcapitate headpoles and capitate footpoles.
LM scalebar = 10 µm
Length Range
18.4-23.4 µm
18.4-23.4 µm
Width Range
5.5-6.1 µm
5.5-6.1 µm
Striae in 10 µm
11.7-14.3
11.7-14.3
Gomphonella olivacea
Length Range
14-40 µm
14-40 µm
Width Range
5-8 µm
5-8 µm
Striae in 10 µm
10-13 in the center of the valve, 12-14 at the ends
10-13 in the center of the valve, 12-14 at the ends
Gomphosinica geitleri
Length Range
12-38 µm
12-38 µm
Width Range
4.5-6.6 µm
4.5-6.6 µm
Striae in 10 µm
16-20 near the center valve, 18-20 near the headpole, 16-20 near the footpole
16-20 near the center valve, 18-20 near the headpole, 16-20 near the footpole