Diatoms of North AmericaDiatoms of North America
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Compare Nitzschia dissipata

(Kütz.) Rabenh. 1860

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Valves of Nitzschia dissipata var. media and N. recta are larger and the raphe is always close to the margin. Nitzschia recta has a flat valve face.

LM scalebar = 10 µm
Nitzschia dissipata LM6 Nitzschia dissipata LM2 Nitzschia dissipata LM4 Nitzschia dissipata LM3 Nitzschia dissipata LM5 Nitzschia dissipata LM1
Length Range
11.9-72 µm
Width Range
2.9-8 µm
Striae in 10 µm
32-50

Nitzschia recta

Hantzsch ex Rabenh. 1862

Nitzschia recta LM7 Nitzschia recta LM5 Nitzschia recta LM6 Nitzschia recta LM3 Nitzschia recta LM8
Length Range
48-85 µm
Width Range
4.7-7 µm
Striae in 10 µm
39-50

Also compare to

Nitzschia dissipata var. media

(Hantzsch) Grunow

BioData Reference
Krammer and Lange-Bertalot 2/2 Pl 11 Fig 8-14