Compare Gomphonema consector
Compare
Valves of G. apicatum are much larger.
Gomphonema parvulum has straight, parallel striae.
Gomphonema exilissimum has a gradually attenuated and acutely rounded headpole.
LM scalebar = 10 µm
Length Range
16.2-24.5 µm
16.2-24.5 µm
Width Range
5.3-6.0 µm
5.3-6.0 µm
Striae in 10 µm
13-15
13-15
Gomphonema apicatum
Length Range
40-53 µm
40-53 µm
Width Range
13-15 (as measured at the broadest portion of the valve) µm
13-15 (as measured at the broadest portion of the valve) µm
Striae in 10 µm
9-11
9-11