Pinnularia acrosphaeria var. minor
Pinnularia acrosphaeria f. minor
Pinnularia acrosphaeria var. laevis
Pinnularia acrosphaeria var. parva
Pinnularia acrosphaeria var. sandvicensis
Pinnularia acrosphaeria var. tumidula
Pinnularia acrosphaeria f. undulata