References
For Cordiaceae
Al-Shehbaz, I.A. 1991. The genera of Boraginaceae in the southeastern United States. J. Arnold Arb. Suppl. Series 1: 1-169. Google Scholar
Gottschling, Weigend, & Hilger. 2016. In Kadereit, J.W., and V. Bittrich. 2016. The families and genera of flowering plants. XIV. Flowering plants – Eudicots – Aquifoliales, Boraginales, Bruniales, Dipsacales, Escalloniales, Garryales, Paracryphiales, Solanales (except Convolvulaceae), Icacinaceae, Metteniusaceae, Vahliaceae. Springer, Berlin. 412 pp. Google Scholar
Miller, J.S. 1985. Systematics of the genus Cordia (Boraginaceae) in Mexico and Central America. Ph.D. dissertation, St. Louis University, St. Louis, MO. Google Scholar