Cereus repandus (syn. Cereus peruvianus), the Peruvian apple cactus, is a large, erect, spiny columnar cactus found in South America. It is also known as giant club cactus, hedge cactus, cadushi (in Papiamento and Wayuunaiki), and kayush.
Cereus repandus is grown mostly as an ornamental plant, but has some local culinary importance. The Wayuu from the La Guajira Peninsula of Colombia and Venezuela also use the inner cane-like wood of the plant in wattle and daub construction.
Wayuu (Wayuu: Wayuunaiki [waˈjuːnaiki]), or Guajiro, is the most widely spoken Arawakan language, spoken by 400,000 indigenous Wayuu people in northwestern Venezuela and northeastern Colombia on the Guajira Peninsula and surrounding Lake Maracaibo.
There were an estimated 300,000 speakers of Wayuunaiki in Venezuela in 2012 and another 120,000 in Colombia in 2008, approximately half the ethnic population of 400,000 in Venezuela (2011 census) and 400,000 in Colombia (2018 census). Smith (1995) reports that a mixed Wayuu—Spanish language is replacing Wayuunaiki in both countries. However, Campbell (1997) could find no information on this.