||Now including Neoporteria, Neochilenia, Thelocephala, Horridocactus etc. Therefore this genus is very variable; from large heads (50cm across) to very small, barely visible in habitat with large roots (aerocarpa, napina, odieri). Flowers from small and numerous (10mm) to rather large (70mm). From whitish to yellow, red, magenta. This is a perfect genus to grow due to its variability in body, spines and flowers.