Diatoms of North AmericaDiatoms of North America
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Compare Brachysira follis

(Ehrenb.) R.Ross in B.Hartley, R.Ross and D.M.Williams 1986

Compare

Brachysira hannae is less inflated at mid-valve and the apices are more narrow.

LM scalebar = 10 µm
Brachysira follis LM2 Brachysira follis LM6 Brachysira follis LM5 Brachysira follis LM7 Brachysira follis LM1
Length Range
30.5-48.8 µm
Width Range
15.3-19.3 µm
Striae in 10 µm
21-27

Brachysira hannae

(Reimer) Lange-Bert. and Moser 1994

Brachysira hannae LM1 Brachysira hannae LM2 Brachysira hannae LM Brachysira hannae LM5 Brachysira hannae LM4
Length Range
30-60 µm
Width Range
14-19 µm
Striae in 10 µm
20-22