Nyctocereus serpentinus var. ambiguus (Bonpl.) Borg, Cacti, ed. 1: 131. 1937
Nyctocereus serpentinus var. ambiguus, Cacti, ed. 1: 131. 1937
is new combination for Cactus ambiguus, Descr. Pl. Malmaison: 90. 1813
Nyctocereus serpentinus var. ambiguus, Cacti, ed. 1: 131. 1937
Taxon for this name