| Collomia aggregata (Pursh) Porter ex A.Gray | Ipomopsis aggregata (Pursh) V.E.Grant |
| Collomia debilis camporum Payson | Collomia debilis (S.Watson) Greene |
| Collomia hurdlei A.Nelson | Collomia debilis (S.Watson) Greene |
| Collomia longiflora (Torr.) A.Gray | Ipomopsis longiflora (Torr.) V.E.Grant |