Diatoms of North AmericaDiatoms of North America
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Compare Aulacoseira herzogii

(Lemmerm.) Simonsen 1979

Compare

Aulacoseira herzogii differs from A. granulata by very fine mantle areolae, almost indistinguishable in LM. The grooves in A. herzogii are positioned at a right angle in relation to the spines, while in A. granulata the grooves are adjacent to the spines. Aulacoseira granulata also has both separation valves and linking valves, whereas A. herzogii has only separation valves.

LM scalebar = 10 µm
Aulacoseira herzogii LM7 Aulacoseira herzogii LM6 Aulacoseira herzogii LM1 Aulacoseira herzogii LM2 Aulacoseira herzogii LM3 Aulacoseira herzogii LM4 Aulacoseira herzogii LM5
Diameter
3-7 µm
Width Range
7-14 µm
Striae in 10 µm
30-32

Aulacoseira granulata

(Ehrenb.) Simonsen 1979

Aulacoseira granulata LM1 Aulacoseira granulata LM2 Aulacoseira granulata LM3 Aulacoseira granulata LM4 Aulacoseira granulata LM5 Aulacoseira granulata LM6
Diameter
4-17 µm
Width Range
4-20 µm
Striae in 10 µm
8-18