A.Villaseñor, J. L. 2016: Checklist of the native vascular plants of Mexico. – Revista Mex. Biodivers. 87: 559–902 (as Struthanthus johnstonii Standl. & Steyerm.)
B.Villaseñor, J. L. 2016: Checklist of the native vascular plants of Mexico. – Revista Mex. Biodivers. 87: 559–902