Compare Pinnularia pulchella var. canadensis
Compare
Pinnularia pulchella var. canadensis and P. pulchella are quite similar and both taxa have a gibbous center and rounded apices. Pinnularia pulchella, however, has a more gibbous expansion in the central valve.
Pinnularia domingensis has a longitudinal line that crosses the striae further away from the axial area.
Pinnularia ectorii is similar in shape and size, however, it has a lower stria density (5–6 stria in 10 µm).
LM scalebar = 10 µm
Length Range
183-232 µm
183-232 µm
Width Range
29-34 µm
29-34 µm
Striae in 10 µm
6-7
6-7
Pinnularia ectorii
Length Range
185–335 µm
185–335 µm
Width Range
29–44 µm
29–44 µm
Striae in 10 µm
5–6 throughout the valve, up to 9 around central area
5–6 throughout the valve, up to 9 around central area