A.Villaseñor, J. L. 2016: Checklist of the native vascular plants of Mexico. – Revista Mex. Biodivers. 87: 559–902
B.Cohen, J. & Davis, J. I. 2009: Nomenclatural changes in Lithospermum (Boraginaceae) and related taxa following a reassessment of phylogenetic relationships. – Brittonia 61: 101-111