Echinocactus phymatothele Poselg. ex Rümpler [as "phymatothelos"], Handb. Cacteenk., ed. 2, 2(16): 602. 1886
Echinocactus phymatothele [as "phymatothelos"], Handb. Cacteenk., ed. 2, 2(16): 602. 1886
has orthographic variant Echinocactus phymatothelos