Mammillaria pennispinosa subsp. pennispinosa 2% complete

No common name

No author No year - Krainz ex Shurly. (1948). In: Cact. J. Brit. 10: 18, Sine Descr. lat., Krainz in Sukkulentenk., Jahrb. Schweiz. Kakt.-Ges. 2: 20.