| Name | Catharinea macmillanii Holzinger |
| Authorship | Holzinger |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Catharinea Ehrhart ex F. Weber & D. Mohr |
| Citation | 1903 Minnesota Bot. Stud. 3: 120 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Catharinea macmillanii Holzinger |
| Identification made in | [no date] (2) |