| Name | Cosmarium crenatum f. boltiana (Gutwinski) West & G.S.West |
| Authorship | (Gutwinski) West & G. S. West |
| Rank | Forma |
| NomenclaturalStatus | Unknown |
| Placed in | Cosmarium crenatum Ralfs ex Ralfs |
| Remarks | Created from Taxon Name Import: Cosmarium crenatum f. boltiana (Gutwinski) West & G.S.West |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cosmarium crenatum f. boltiana (Gutwinski) West & G.S.West |
| Identification made in | [no date] (1) |
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