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Grunowia sinuata is larger and triundulate. Grunowia solgensis is small and lanceolate.

LM scalebar = 10 µm
Nitzschia sinuata var tabellaria LM6 Nitzschia sinuata var tabellaria LM5 Nitzschia sinuata var tabellaria LM4 Nitzschia sinuata var tabellaria LM3 Nitzschia sinuata var tabellaria LM7 Nitzschia sinuata var tabellaria LM2 Nitzschia sinuata var tabellaria LM1
Length Range
9-21 µm
Width Range
4.5-8.0 µm
Striae in 10 µm
18-23

Grunowia sinuata

(Thwaites) Rabenhorst 1864

Nitzschia sinuata LM6 Nitzschia sinuata LM5 Nitzschia sinuata LM4 Nitzschia sinuata LM3 Nitzschia sinuata LM2 Nitzschia sinuata LM1
Length Range
22.5-44.3 µm
Width Range
6.2-8.5 µm
Striae in 10 µm
18-21

Grunowia solgensis

(A.Cleve) Aboal 2003

Grunowia solgensis LM2 Grunowia solgensis LM5 Grunowia solgensis LM6 Grunowia solgensis LM1 Grunowia solgensis LM3 Grunowia solgensis LM7 Stauroneis thermicola LM6
Length Range
9.4-13.1 µm
Width Range
2.9-3.5 µm
Striae in 10 µm
23-26

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