| Name | Willeya diffractella (Nylander) Müller Arg. |
| Authorship | (Nylander) Müller Arg. |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Willeya Müller Arg. |
| Citation | 1883 Flora 66(22): 345 |
| Holdings | 12 Specimens held in the Harvard University Herbaria identified as Willeya diffractella (Nylander) Müller Arg. |
| Identification made in | [no date] (12) |
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