Mammillaria wrightii f. wolfii D.R.Hunt in Cact. Succ. J. Gr. Brit. 41(4): 97–98. 1979 Mammillaria wrightii f. wolfii D.R.Hunt in Cact. Succ. J. Gr. Brit. 41(4): 97–98. 1979is basionym for Mammillaria wrightii var. wolfii (D.R.Hunt) Repp., Gattung Mammillaria 1: 99. 1991Taxon for this nameMammillaria wrightii f. wolfii D.R.Hunt