Discocactus zehntneri subsp. alagoinhensis Zachar in Kaktusy (Brno) 57(4): 115. 2021
Discocactus zehntneri subsp. alagoinhensis in Kaktusy (Brno) 57(4): 115. 2021
Holotype: Brazil, Piauí, near Alagoinha de Piauí, alt. 390 m, 19 Mar 2021, M. Zachar 1790 (UB: UB217306)