- Haplopappus canescens
- Haplopappus canescens (Phil.) Reiche
- Heterotheca camporum
- Heterotheca camporum (Greene) Shinners var. camporum
- Heterotheca canescens
- Heterotheca canescens (DC.) Shinners
- Heterotheca fulcrata
- Heterotheca fulcrata (Greene) Shinners
- Heterotheca grandiflora
- Heterotheca grandiflora Nutt.
- Heterotheca inuloides
- Heterotheca inuloides Cass.
- Heterotheca inuloides Cass. var. leptoglossa (DC.) R.E.Cook & Semple
- Heterotheca leptoglossa
- Heterotheca pumila
- Heterotheca pumila (Greene) Semple
- Heterotheca sp.
- Heterotheca stenophylla
- Heterotheca stenophylla (A.Gray) Shinners var. stenophylla
- Heterotheca subaxillaris
- Heterotheca subaxillaris (Lam.) Britton & Rusby
- Heterotheca villosa
- Heterotheca villosa (Pursh) Shinners
- Heterotheca villosa (Pursh) Shinners var. minor (Hook.) Semple
- Heterotheca villosa (Pursh) Shinners var. villosa
- Heterotheca villosa (Pursh) Shinners var. foliosa (Nutt.) V. L. Harms
- Heterotheca zionensis
- Heterotheca zionensis Semple