Frailea matoana Buining & Brederoo in Cact. Succ. J. (Los Angeles) 43: 139. 1971
Frailea matoana in Cact. Succ. J. (Los Angeles) 43: 139. 1971
is basionym for Astrophytum matoanum in Acta Mus. Richnov., Sect. Nat., 12(1): 14. 2005
is basionym for Frailea schilinzkyana subsp. matoana in Kaktusy (Brno) 40(Spec. 1): 14. 2004