S. griseus (Dagger Cactus) fruits, locally known as iguaraya, are relished by the Wayuu from the La Guajira Peninsula of Colombia.
The habitat of C. palearis is characterized by a greater frequency of Stenocereus pruinosus, Albizzia idiopoda, Ximena americana and Acacia deamii.
wildpretii is known to grow on species of the globose cacti Echinocactus platyacanthus, Mammillaria carnea and Ferocactus latispinus; the opuntioid cacti Opuntia depressa, O. maxima, O. pilifera and O. tomentosa) and the columnar cacti (Myrtillocactus geometrizans, Pachycereus hollianus, P. weberi, Stenocereus and Neobuxbaumia.