Lobelia volcanica T.J. Ayers in Syst. Bot. 15: 317. 1990 sec. Rzedowski 2019
- =Heterotoma tenella M. Martens & Galeotti ex Benth. & Hook. f., Gen. Pl. 2: 553. 1873 syn. sec. The Plant List 2013
- =Calcaratolobelia tenella (Turcz.) Wilbur in Sida 17(3): 563. 1997 syn. sec. Govaerts 2013