| Name | Echinospermum diffusum Douglas ex Lehmann |
| Authorship | Douglas ex Lehmann |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Echinospermum |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Echinospermum diffusum Douglas ex Lehmann |
| Identification made in | [no date] (1) |