Heliocereus elegantissimus var. stenopetalus Bravo ex S.Arias, U.Guzmán & Gama in Cact. Suc. Mex. 37: 72. 1992
Heliocereus elegantissimus var. stenopetalus in Cact. Suc. Mex. 37: 72. 1992
is basionym for Heliocereus schrankii var. stenopetalus in Cact. Succ. J. (Los Angeles) 68: 217. 1996
is basionym for Heliocereus elegantissimus subsp. stenopetalus in Sukkulenty 4(1-2): 41. 2002 ["2001"]
is basionym for Heliocereus schrankii subsp. stenopetalus in Cactaceae Syst. Init. 16: 17. 2003
has orthographic variant Heliocereus elegantissimus var. stenopetalum
Holotype: Mexico, Durango, km 1120 carretera Durango a Mazatlán, 8 May 1965, H. Bravo-Hollis 84 (MEXU 00155748)