| Name | Porotrichum mexicanum Schimper ex Bescherelle |
| Authorship | Schimper ex Bescherelle |
| Rank | Species |
| Placed in | Porotrichum |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Porotrichum mexicanum Schimper ex Bescherelle |
| Identification made in | [no date] (3) |