Subspecies, varieties, forms and cultivars of plants belonging to the Eriosyce senilis complex

• Eriosyce senilis (Backeb.) Katt.: ssp. senilis: It has thin twisted spines and flowers with few bristles and wool. Origin: Rio Choapa. It is quite variable in spination.
• Eriosyce senilis subs. coimasensis (F.Ritter) Katt.: It has strong stiff straight spines. Origin: Las Copimas south to Monte Negro.
• Eriosyce senilis subs. elquiensis Katt.: It has thin twisted spines but the flowers have many bristles and wool. Origin: Elqui Valley.
• Eriosyce senilis var. multicolor hort.: Spines are multicoloured blond/white, yellow, brown to almost black; straight to strongly curled often hairlike soft and flexible.
• Neoporteria gerocephala Y.Itô: has a dark spherical purplish body densely covered with soft interwoven white spines.
• Neoporteria gerocephala f. aurea hort.: is a selected cultivars with golden or amber-yellow spines.
• Neoporteria gerocephala f. monstruosa hort.: is a monstrous highly branching cactus with very short bristly spines that forms dense clumps. Maybe we can call it a freak?
• Neoporteria nidus (Söhrens) Britton & Rose: has shorter flowers about 3 cm long. Distribution. East of Ovalle, Chile.