| Name | Pinnularia oblonga (Kützing) W. Smith |
| Authorship | (Kützing) W. Smith |
| Rank | Species |
| Placed in | Pinnularia Ehrenberg |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Pinnularia oblonga (Kützing) W. Smith |
| Identification made in | [no date] (1) |
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