Jasminocereus howellii E.Y.Dawson in Cact. Succ. J. (Los Angeles) 34: 71. 1962 Jasminocereus howellii E.Y.Dawson in Cact. Succ. J. (Los Angeles) 34: 71. 1962is basionym for Jasminocereus thouarsii subsp. howellii (E.Y.Dawson) Guiggi in Cactology 5 (Suppl. 8): 12. 2020Taxon for this nameJasminocereus howellii E.Y.Dawson