Mammillaria ascensionis Repp. in Kakteen And. Sukk. 30(3): 61–62. 1979
Mammillaria ascensionis in Kakteen And. Sukk. 30(3): 61–62. 1979
is basionym for Mammillaria glassii var. ascensionis in Cact. Succ. J. (Los Angeles) 51(3): 126. 1979
is basionym for Mammillaria glassii subsp. ascensionis, Mammillaria Postscripts 6: 6. 1997
is basionym for Bartschella glassii subsp. ascensionis in Sukkulenty 3: 37. 2000