| Name | Fissidens obscurocostatus Pursell |
| Authorship | Pursell |
| Rank | Species |
| Placed in | Fissidens Hedwig |
| Citation | 1966 Bryologist 69: 495. f. 7-8. |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Fissidens obscurocostatus Pursell |
| Identification made in | [no date] (1) |
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