| Name | Calyptridium quadripetalum S. Watson |
| Authorship | S. Watson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Calyptridium Nuttall |
| GUID | urn:lsid:ipni.org:names:273945-2 |
| Citation | 1885 Proc. Amer. Acad. Arts 20: 356 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Calyptridium quadripetalum S. Watson |
| Identification made in | [no date] (7) |
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