Pleurosigma inflatum is smaller and the raphe is eccentric distal from the central area.
Pleurosigma salinarum var. boyeri rarely exceeds 100 µm in valve length. P
leurosigma elongatum has a minimum width of 20 µm, which is the maximum width for P. delicatulum.
BioData Reference
Krammer and Lange-Bertalot 2/1 Pl 113 Fig 4
BioData Reference
Patrick and Reimer 1966 Pl 27 Fig 4a-c
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