References
For Varronia
Correll, D.S., and H.B. Correll. 1982. Flora of the Bahama Archipelago (including the Turks and Caicos Islands). J. Cramer, Vaduz. 1692 pp. Google Scholar
Gann, G.D., K.A. Bradley, and S.W. Woodmansee. 2002. Rare plants of south Florida: their history, conservation, and restoration. Inst. Regional Conservation, Miami FL. https://regionalconservation.org/ircs/pdf/Gann_et_al._2002.pdf 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