Compare

Stauroneis lauenburgiana has similarly irregular areolae, but is much smaller.

Stauroneis baconiana is more narrow, with concave valve margins, and is much smaller.

Stauroneis akamina is narrower, with more evenly spaced areolae, and is much smaller.

LM scalebar = 10 µm
Stauroneis alabamae LM1 Stauroneis alabamae LM2 Stauroneis alabamae LM5 Stauroneis alabamae LM4 Stauroneis alabamae LM6 Stauroneis alabamae LM3 Stauroneis alabamae LM7
Length Range
115.8-157.4 µm
Width Range
27.4-34.4 µm
Striae in 10 µm
14-17

Stauroneis baconiana

Stodder 1859

Stauroneis baconiana LM1 Stauroneis baconiana LM2 Stauroneis baconiana LM3 Stauroneis baconiana LM4 Stauroneis baconiana LM5 Stauroneis baconiana LM6
Length Range
73-139 µm
Width Range
9-18 µm
Striae in 10 µm
16 in the center, 20 at the ends

Stauroneis lauenburgiana

Hust. 1950

Stauroneis lauenburgiana LM4 Stauroneis lauenburgiana LM3 Stauroneis lauenburgiana LM2 Stauroneis lauenburgiana LM5 Stauroneis lauenburgiana LM1 Stauroneis lauenburgiana LM7 Stauroneis lauenburgiana LM6
Length Range
37-50 µm
Width Range
9-11 µm
Striae in 10 µm
18-22

Stauroneis akamina

Bahls 2010

Stauroneis akamina LM7 Stauroneis akamina LM6 Stauroneis akamina LM5 Stauroneis akamina LM4 Stauroneis akamina LM3 Stauroneis akamina LM2 Stauroneis akamina LM1
Length Range
63-140 µm
Width Range
16-24 µm
Striae in 10 µm
16-22

Also compare to

Stauroneis nobilis

Schumann 1867

Stauroneis alabamae var. angulata

Heiden 1903

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