| Name | Placodium cladodes Tuckerman |
| Authorship | Tuckerman |
| Rank | Species |
| Placed in | Placodium Hill ex F. H. Wiggers |
| Citation | 1864 (1866) Proc. Amer. Acad. Arts 6: 265 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Placodium cladodes Tuckerman |
| Identification made in | [no date] (1), 1997 (1) |
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