| Name | Pleurothallis williamsii Ames |
| Authorship | Ames |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Pleurothallis R. Brown |
| GUID | urn:lsid:ipni.org:names:653806-1 |
| Citation | 1922 Orchidaceae (Ames) 7: 120 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Pleurothallis williamsii Ames |
| Identification made in | [no date] (2), 1998 (1), 2011 (2) |
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