Diatoms of North AmericaDiatoms of North America
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Compare Nitzschia acicularis

(Kütz.) W.Sm. 1853

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The apices of N. reversa are curved in opposite directions. The central fibulae of N. draveillensis are more broadly spaced than the other fibulae, forming a "central nodule".

LM scalebar = 10 µm
Nitzschia acicularis LM3 Nitzschia acicularis LM1 Nitzschia acicularis LM2 Nitzschia acicularis LM4 Nitzschia acicularis LM5
Length Range
30.0-100.0 µm
Width Range
3.0-4.0 µm

Nitzschia reversa

W.Sm. 1853

Nitzschia reversa LM1 Nitzschia reversa LM2 Nitzschia reversa LM4 Nitzschia reversa LM3
Length Range
35.0-75.0 µm
Width Range
2.5-4.5 µm

Also compare to

Nitzschia draveillensis

M.Coste and Ricard

BioData Reference
Krammer and Lange-Bertalot 2/2 Pl 85 Fig 5-6