| Name | Erythranthe diffusa (A. L. Grant) N. S. Fraga | 
| Authorship | (A. L. Grant) N. S. Fraga | 
| Rank | Species | 
| Placed in | Erythranthe | 
| Citation | 2012 Phytoneuron 2012-39: 35 | 
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Erythranthe diffusa (A. L. Grant) N. S. Fraga | 
| Identification made in | [no date] (1), 2018 (8), 2024 (1) |