México (Country)nativeA: Baja California SurnativeB; Chihuahuanative; Coahuila de Zaragozanative; Durangonative ‒ native; Nuevo Leónnative; San Luis PotosínativeB; Sonoranative; Zacatecasnative, United States of Americanative
B.Villaseñor, J. L. 2016: Checklist of the native vascular plants of Mexico. – Revista Mex. Biodivers. 87: 559–902 (as Lippia wrightii A. Gray ex Torr.)