As classified in WFO snapshot
December 2022
Warning: older classification
species
Echinocactus steinmannii
Solms
This species name was first published in in Bot. Zeitung (Berlin) 2. Abt. 65(Abt. 1): 133, fig. 4, 10. 1907.
This species name has been reclassified since this snapshot. Its current preferred usage is a synonym .