Subspecies, varieties, forms and cultivars of plants belonging to the Echinopsis chiloensis group

• Echinopsis chiloensis (Colla) H.Friedrich & G.D.Rowley: It is a fiercely spiny cactus. Like it's relatives, this species is a quick grower and is reported to grow into a shrub or small tree up to 8 m in height. Distribution: coastal cordillera of Chile (North-Central Valley of Chile)
• Echinopsis chiloensis var. borealis (F.Ritter): can produce very long spines, up to 25 cm long. Distribution: Elqui valley, Huanta, Coquimbo, Chile
• Echinopsis chiloensis var. eburnea (Phil. ex K.Schum.) H.Friedrich & G.D.Rowley: This is the stouter spined form with impressive and showy ivory spines and all spines long; flowers pinkish. Distribution: East of Los Patos, bottom of valley, Coquimbo, Chile.
• Echinopsis chiloensis subs. litoralis (Johow) M.Lowry: is shrubby with arching or erect cylindrical branches less than 2 m tall. Its has much shorter, thinner and flexible spines. Distribution: coast north of Valparaiso (Atacama, Coquimbo).
• Echinopsis chiloensis var. panhoplites (K.Schum.): Young spines almost black, central spine very long. Distibution: Ovalle, Coquimbo, Chile.
• Echinopsis chiloensis var. pycnacantha (Salm-Dyck): spines very short and thick.
• Echinopsis chiloensis subs. skottsbergii (Backeb. ex Skottsb.) G.J.Charles