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Compare Fragilaria vaucheriae

(Kütz.) Petersen 1938

Compare

Fragilaria vaucheriae and F. capucina both have widely spaced striae with an expanded central area. Fragilaria vaucheriae has rostrate to subcapitate valve apices. The striae of F. vaucheriae are generally more coarse and more broadly spaced than those of F. capucina. Fragilaria perminuta has narrower valves and finer striae than F. vaucheriae. Fragilaria recapitellata has wider valves and distinctly capitate ends.

LM scalebar = 10 µm
Fragilaria vaucheriae LM2 Fragilaria vaucheriae LM4 Fragilaria vaucheriae LM5 Fragilaria vaucheriae LM3 Fragilaria vaucheriae LM1
Length Range
6–30 µm
Width Range
4-5 µm
Striae in 10 µm
14-16

Fragilaria recapitellata

Lange-Bert. and Metzeltin 2009

Fragilaria recapitellata LM7 Fragilaria recapitellata LM6 Fragilaria recapitellata LM2 Fragilaria recapitellata LM5 Fragilaria recapitellata LM1 Fragilaria recapitellata LM4 Fragilaria recapitellata LM3
Length Range
14.6-26.6 µm
Width Range
4.1-5.6 µm
Striae in 10 µm
16-20

Also compare to

Fragilaria capucina

Desm.

Fragilaria perminuta

(Grunow in Van Heurck) Lange-Bert.