Penstemonia
Engelhardt 1946
| Penstemonia brevifolia | Butler - 1902 | |
| Penstemonia clarkei | Engelhardt - 1946 | |
| Penstemonia dammersi | Engelhardt - 1946 | |
| Penstemonia edwardsii | Beutenmüller - 1894 | |
| Penstemonia hennei | Engelhardt - 1946 | |
| Penstemonia pappi | Eichlin - 1987 | |
| Penstemonia utahensis | Beutenmüller - 1909 |