| Taxon | Penstemon davidsonii var. davidsonii |
| group | Eudicots |
| Family | Plantaginaceae |
| Family common name(s) | plantain; plantains |
| Genus common name(s) | penstemon; beardtongue; beard-tongue; beard tongue; bearded-tongue; bearded tongue; beardstongue; beards-tongue; beards tongue; beard's-tongue; beard's tongue |
| Species common name(s) | Davidson's penstemon; Davidson's beardtongue; Davidson's beard-tongue; Davidson penstemon; Davidson beardtongue; Davidson beard-tongue; blue color mat; timberline penstemon; timberline beardtongue |
| |
| |
| Common name(s) generally applied to other taxa or multiple taxa | shrubby beardtongue, shrubby beard-tongue, shrubby beard tongue, alpine penstemon, creeping beardtongue are applied to multiple Penstemon taxa |
| |
| Notes | Davidson is a proper name, so upper case preferable; Davidsons is an error |
| Synonymy: The Jepson Manual (1993), FNA, PLANTS, etc | Scrophulariaceae s.l. |
