Lobelia cardinalis L., Sp. Pl. 2: 930. 1753 sec. Rzedowski 2019
- =Rapuntium cardinale Mill., Gard. Dict. (ed. 8): no. 1. 1768 syn. sec. ???
- =Lobelia graminea Lam., Encycl. 3: 583. 1792 syn. sec. Rzedowski 2019
- =Lobelia fulgens Humb. & Bonpl. ex Willd., Hort. Berol.: t. 85. 1809 syn. sec. Rzedowski 2019
- =Lobelia splendens Humb. & Bonpl. ex Willd., Hort. Berol. 2(8): pl. 86. 1809 syn. sec. Rzedowski 2019
- =Rapuntium fulgens Kuntze, Prodr. Monogr. Lobel.: 26. 1836 syn. sec. Rzedowski & Calderón de Rzedowski 1997
- =Rapuntium gramineum (Lam.) C. Presl, Prodr. Monogr. Lobel.: 26. 1836 syn. sec. The Plant List 2013
- =Rapuntium splendens (Humb. & Bonpl. ex Willd.) C. Presl, Prodr. Monogr. Lobel.: 26. 1836 syn. sec. The Plant List 2013
- =Lobelia splendens var. atrosanguinea Hook., Bot. Mag. t. 4002. 1843 syn. sec. The Plant List 2013
- =Lobelia mucronata Engelm., Memoir Tour N. Mexico [Wislizenus]: 108. 1848 syn. sec. The Plant List 2013
- =Lobelia phyllostachya Engelm., Memoir Tour N. Mexico [Wislizenus]: 108. 1848 syn. sec. Rzedowski 2019
- =Lobelia splendens var. ignea Hook., Bot. Mag. t. 4960. 1857 syn. sec. The Plant List 2013
- =Dortmannia fulgens (Humb. & Bonpl. ex Willd.) Kuntze, Revis. Gen. Pl. 2: 972. 1891 syn. sec. The Plant List 2013
- =Dortmannia graminea (Lam.) Kuntze, Revis. Gen. Pl. 2: 972. 1891 syn. sec. The Plant List 2013
- =Dortmannia phyllostachya (Engelm.) Kuntze, Revis. Gen. Pl. 2: 973. 1891 syn. sec. The Plant List 2013
- =Dortmannia splendens (Humb. & Bonpl. ex Willd.) Kuntze, Revis. Gen. Pl. 2: 973. 1891 syn. sec. The Plant List 2013
- =Lobelia splendens f. ignea (Hook.) Voss, Vilm. Blumengärtn., ed. 3, 1: 575. 1894 syn. sec. The Plant List 2013
- =Lobelia cardinalis subsp. graminea (Lam.) McVaugh in Ann. Missouri Bot. Gard. 27(3): 347. 1940 syn. sec. The Plant List 2013