| Name | Psilocaulon trothae (Engler) Schwantes |
| Authorship | (Engler) Schwantes |
| Rank | Species |
| Placed in | Psilocaulon |
| Citation | 1928 Gartenflora 77: 69 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Psilocaulon trothae (Engler) Schwantes |
| Identification made in | [no date] (2) |
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