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Compare Epithemia argus

(Ehrenb.) Kütz. 1844

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Epithemia argus var. longicornis has wedge-shaped apices. Other Epithemia species have less rounded apices and a proximal raphe arch that is not as close to the dorsal margin.

LM scalebar = 10 µm
83 Microns 75Microns 66 Microns 50Microns 40Microns 36 Microns
Length Range
36.2-84.3 µm
Width Range
8.4-13.9 µm
Striae in 10 µm
10-11

Also compare to

Epithemia argus var. longicornis

(Ehrenb.) Grunow 1862

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