Centenaria rupacquiana. A Plant B leaf (adaxial surface) C mature leaf (abaxial surface) D mature leaf (adaxial surface) E upper leaf F uppermost leaf bracteiform G capitula (upper view) H involucre I inner phyllaries J outer phyllaries K flower (frontal view) L flower (lateral view) M flower tube with glandular trichomes N flower (upper view) O style and stamens P, Q scale of pappus R achene without pappus. Photos by P. Gonzáles.