| Name | Porophyllum leptophyllum I. M. Johnston |
| Authorship | I. M. Johnston |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Porophyllum Guettard |
| GUID | urn:lsid:ipni.org:names:239329-1 |
| Citation | 1924 Proc. Calif. Acad. Sci. 12: 1210 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Porophyllum leptophyllum I. M. Johnston |
| Identification made in | [no date] (2), 2008 (1), 2014 (1) |