A. P. de Candolle: Revue de la Famille des Cactées. In: Mémoires du Museum d'Histoire Naturelle. Band 17, Paris 1828, S. 115–116 (online).
Nathaniel Lord Britton, Joseph Nelson Rose: The Genus Cereus and Its Allies in North America. In: Contributions from the United States National Herbarium. Band 12, Nr. 10, 1909, S. 419 (online).