| Name | Prestonia riedelii (Müller Arg.) Markgraf |
| Authorship | (Müller Arg.) Markgraf |
| Rank | Species |
| Placed in | Prestonia R. Brown |
| Citation | 1924 Repert. Spec. Nov. Regni Veg. Beih. 20: 26 |
| Holdings | 25 Specimens held in the Harvard University Herbaria identified as Prestonia riedelii (Müller Arg.) Markgraf |
| Identification made in | [no date] (12), 1932 (7), 1934 (2), 1992 (1), 2003 (3) |