Phacelia affinis Gray
| Vascular flora of Buenos Aires National Wildlife Refuge (including Arivaca Cienega), Pima County, Arizona S P Mclaughlin (1992) Phytologia 73: 353-377 | |
| A new species of Phacelia (Hydrophyllaceae) from southern Arizona, U.S.A S P Mclaughlin (2007) Novon 17: 46-48 |