González-Zamora P., Rodríguez-Contreras A., Sánchez D., A new endemic species of Acanthocereus (Cactaceae) from southern Jalisco, Mexico, Phytotaxa, 2021, 522(2):131-138, doi: 10.11646/phytotaxa.522.2.5
Original description of Acanthocereus atropurpureus. Low ribs with sinuate margins, purple stems in the dry season and a small known population.