Diatoms of North AmericaDiatoms of North America
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Compare Gomphonema pusillum

(Grunow) Kulikovskiy and Kociolek in Kulikovskiy et al. 2015

Compare

Gomphonema acuminatum var. pusillum is smaller and more linear than G. acuminatum, with which it is frequently confused. It differs from G. brebissonii by being comparatively wider near the headpole.

LM scalebar = 10 µm
Gomphonema pusillum LM4 Gomphonema pusillum LM7 Gomphonema pusillum LM5 Gomphonema pusillum LM6 Gomphonema pusillum LM3 Gomphonema pusillum LM1 Gomphonema pusillum LM2
Length Range
32-56 µm
Width Range
6.5-9.0 µm
Striae in 10 µm
11-13

Gomphonema acuminatum

Ehrenb. 1832

Gomphonema Acuminatum 002 Gomphonema Acuminatum 001 Gomphonema Acuminatum 003 Gomphonema Acuminatum 005 Acuminatum Gc109928B004 Gomphonema Acuminatum 004
Length Range
19-77 µm
Width Range
7-12 µm
Striae in 10 µm
9-12 at the center, 12-14 towards the footpole

Gomphonema brebissonii

Kütz. 1849

Brebissonii Gc8988B005 Brebissonii Gc113636B007 Brebissonii Gc8988B002 Brebissonii Gc8988B003 Brebissonii Gc113636B001B Brebissonii Gc113636B002 Brebissonii Gc113636B003
Length Range
17-48 µm
Width Range
6-9 µm
Striae in 10 µm
9-12