| Name | Petrophytum caespitosum (Nuttall) Rydberg |
| Authorship | (Nuttall) Rydberg |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Petrophytum |
| Contains | Petrophytum caespitosum subsp. acuminatum (Rydberg) Munz Petrophytum caespitosum var. elatius (S. Watson) Tidestrom |
| GUID | urn:lsid:ipni.org:names:727301-1 |
| Holdings | 68 Specimens held in the Harvard University Herbaria identified as Petrophytum caespitosum (Nuttall) Rydberg |
| Identification made in | [no date] (66), 2009 (2) |