| Name | Porophyllum leiocarpum (Urban) Rydberg |
| Authorship | (Urban) Rydberg |
| Rank | Species |
| Placed in | Porophyllum Guettard |
| Remarks | [confirmed][imported from GBIF] |
| Citation | 29 Dec 1916 N. Amer. Fl. 34(3): 184 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Porophyllum leiocarpum (Urban) Rydberg |
| Identification made in | 1964 (1), 2025 (1) |