Compare Pinnularia rexlowei
Compare
Pinnularia alabamae is has a similar valve outline, but is much greater in size.
Pinnularia gentilis differs by wider valves, rounded apices, strongly convergent striae at the valve ends, and absence of spines.
LM scalebar = 10 µm
Length Range
135–188 µm
135–188 µm
Width Range
18–23 µm
18–23 µm
Striae in 10 µm
7-8
7-8
