Otopappus acuminatus S. Watson species accepted

Otopappus brevipes B. L. Rob. species accepted

Otopappus calarcanus S. Díaz species accepted

Otopappus curviflorus (R. Br.) Hemsl. species accepted

Otopappus epaleaceus Hemsl. species accepted

Otopappus guatemalensis (Urb.) R. L. Hartm. & Stuessy species accepted

Otopappus hirsutus (Sw.) R. L. Hartm. & Stuessy species accepted

Otopappus imbricatus (Sch. Bip.) S. F. Blake species accepted

Otopappus koelzii Mc Vaugh species accepted

Otopappus mexicanus (Rzed.) H. Rob. species accepted

Otopappus microcephalus S. F. Blake species accepted

Otopappus robustus Hemsl. species accepted

Otopappus scaber S. F. Blake species accepted

Otopappus serboana B. L. Turner species accepted

Otopappus syncephalus Donn. Sm. species accepted

Otopappus tequilanus (A. Gray) B. L. Rob. species accepted

Otopappus verbesinoides Benth. species accepted