| Name | Plagiobothrys polycaulis (Philippi) I. M. Johnston |
| Authorship | (Philippi) I. M. Johnston |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Plagiobothrys |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Plagiobothrys polycaulis (Philippi) I. M. Johnston |
| Identification made in | [no date] (1) |