Guaiacum coulteri A. Gray, Pl. Nov. Thurb.: 312. 1854 sec. García 2011
- =Guaiacum parvifolium Planch. ex A. Gray in Smithsonian Contr. Knowl. 3(5): 29. 1852 syn. sec. The Plant List 2013
- =Guaiacum planchonii A. Gray in Proc. Amer. Acad. Arts 22: 306. 1887 syn. sec. The Plant List 2013