Borzicactus aurantiacus var. megalantha (F.Ritter) Donald in Natl. Cact. Succ. J. 26: 10. 1971
Borzicactus aurantiacus var. megalantha in Natl. Cact. Succ. J. 26: 10. 1971
is new combination for Matucana megalantha in Succulenta (Netherlands) 8: 117. 1966