Eucephalus engelmannii (D.C. Eaton) Greene

Eucephalus engelmannii (D.C. Eaton) Greene is a synonym sensu FNA Ed. Comm., 2006b of:

Doellingeria engelmannii (D.C. Eaton) Semple, Brouillet & G.A. Allen, an accepted species name sensu Allen et al., 2019.