| Name | Psychotria humboldtiana var. caudata Müller Argoviensis |
| Authorship | Müller Arg. |
| Rank | Variety |
| NomenclaturalStatus | NomLeg |
| Placed in | Psychotria humboldtiana (Chamisso) Müller Argoviensis |
| GUID | urn:lsid:ipni.org:names:212903-2 |
| Citation | 1881 Fl. Bras. [Martius] 6(5): 334 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Psychotria humboldtiana var. caudata Müller Argoviensis |
| Identification made in | [no date] (1) |