| Name | Plesioneuron costulisorum (Copeland) Holttum |
| Authorship | (Copeland) Holttum |
| Rank | Species |
| Placed in | Plesioneuron (Holttum) Holttum |
| Citation | 1975 Blumea 22: 246 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Plesioneuron costulisorum (Copeland) Holttum |
| Identification made in | [no date] (7) |
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