Subspecies, varieties, forms and cultivars of plants belonging to the

• Mammillaria aurihamata Boed.: has golden yellow hooked central spines. Distribution: Mexico, where it occurs in San Luis Potosi, near Real de Catorce.
• Mammillaria brevicrinita Repp.: (Mammillaria crinita) Radial spines 10 - 29, white, finely pubescent, 6 - 9 mm long.
  Central spines: 0 - 7, awl-shaped, yellowish to red to dark brown, 8-16 mm long, one or two hooked.
• Mammillaria crinita DC.: This taxon comprises a very variable a complex of forms, variety and species with varible spination. The flowers cream colored to a pink-cream colored. This is one of the most prolific bloomers among the Mammillarias.
• Mammillaria crinita subs. duwei (Rogoz. & P.J.Braun): It is a small cactus with delicate near harmless feathery spines densely wrapped against the body of the cactus. The long central spine is not present on all the clones, they are yellowish, hooked, to 8 mm long, pubescent. The flowers are yellowish/cream to light yellow.
• Mammillaria crinita subs. duwei f. cristata hort.: crested form completely covered by tight pubescent spines.
• Mammillaria crinita subs. duwei f. inermis hort.: this is a selected strain with pure feathery radial spines (central spines absent)
• Mammillaria crinita subs. duwei f. monstruosa hort.: This is a true oddity and some say that this monster is nothing else than a abnormal root grafted upside down.
• Mammillaria crinita f. nana (Backeb.)
• Mammillaria crinita subs. painteri (Rose) U.Guzmán: has red, brown or coffee coloured central spines. With age it may offset from the base to form a small cluster. Distribution: Queretaro and adjacent areas in Hidalgo and Guanajuato.
• Mammillaria crinita subs. painteri f. monstruosa cristata hort.: Crested form. has more bristly spines than the Mammillaria crinita subs. painteri f. monstruosa from which it derives.
• Mammillaria crinita subs. painteri f. monstruosa hort.: Cultivated mutant characterized by very reduced or absent spines, free branching, and with small pink flowers.
• Mammillaria glochidiata var. xiloensis Repp.: (Mammillaria crinita) Plants irregularly forming tightly packed cluster of egg-shaped balls, up to 5 cm tall with dark yellow fine hooklike spines and pale cream-pink flowers.
• Mammillaria monancistracantha Backeb.: (Mammillaria crinita f. nana)
• Mammillaria scheinvariana R.Ortega V. & Glass: (Mammillaria crinita) Stem covered by numerous hairlike radial spines, giving the plant a shaggy appearance.
• Mammillaria tezontle W.A.Fitz Maur. & B.Fitz Maur.: has small stems only 1-2 cm in diameter with short, yellow central spination and relatively large flowers. Distribution: North of San Luis Potosi.
• Mammillaria trichacantha K.Schum.: (Mammillaria crinita f. nana) It his is a remarkable species on account of its having short hooked brown to yellow/orangish spines that finally turn to gray.
• Mammillaria wildii A.Dietr.: (Mammillaria crinita ssp. wildii) Short brownish to yellow hooked, minutely pubescent central spines and 1 to 15, whitish, smooth, 4 to 5 mm long radials.
• Mammillaria wildii f. cristata hort.: (Mammillaria crinita ssp wildii "cristata") It will form huge crested and free flowering mounds up 40 cm (or more) in diameter.
• Mammillaria zeilmanniana Boed.: has flowers typically carmine violet to purple-pink in color, seldom white. Distribution: San Miguel de Allende in Cañada Virgen, Guanajuato.
• Mammillaria zeilmanniana f. albiflora hort.: is a white flowered sport that was produced in cultivation and not known to occur in the wild.