Peniocereus fosterianus Cutak in Cact. Succ. J. (Los Angeles) 18: 19. 1946
Peniocereus fosterianus in Cact. Succ. J. (Los Angeles) 18: 19. 1946
is basionym for Acanthocereus fosterianus in Cact.-Avent. Int. 98(Suppl.): 2. 2013
Holotype: Mexico, Tierra Colorada, along the Mexico City-Acapulco Highway or approx. 50 miles north of Acapulco, alt. 1500 ft, 1935, Foster, M. B. (MO: 054010) https://plants.jstor.org/stable/10.5555/al.ap.specimen.mo-054010?searchUri=filter%3Dname%26so%3Dps_group_by_genus_species%2Basc%26Query%3DPeniocereus%2Bfosterianus