Astrophytum capricorne (A. Dietr.) Britton & Rose, Cactaceae (Britton & Rose) 3: 184. 1922 sec. Hunt 2016
- ≡Echinocactus capricornis A. Dietr. in Allg. Gartenzeitung 19: 274. 1851 syn. sec. Guzmán & al. 2003
- =Echinocactus capricornis var. minor Runge ex Quehl in Monatsschr. Kakteenk. 2: 82. 1892 syn. sec. Guzmán & al. 2003
- =Astrophytum senile Fric in Ceskoslov. Zahradn. Listy 1924: 120. 1924 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne var. mayor Fric in Život v Prír. 29: 10. 1925 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne var. minus Fric in Život v Prír. 29: 10. 1925 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne var. orientale Fric in Život v Prír. 29: 10. 1925 syn. sec. Guzmán & al. 2003
- =Echinocactus capricornis var. aureus H. Moeller in Z. Sukkulentenk. 2: 128. 1925 syn. sec. Guzmán & al. 2003
- =Echinocactus capricornis var. crassispinus H. Moeller in Z. Sukkulentenk. 2: 129. 1925 syn. sec. Guzmán & al. 2003
- =Echinocactus capricornis var. senilis Fric ex H. Moeller in Z. Sukkulentenk. 2: 128. 1925 syn. sec. Guzmán & al. 2003
- =Maierocactus capricornis (A. Dietr.) E.C. Rost in Z. Sukkulentenk. 2: 142. 1925 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne var. crassispinum (H. Moeller) Okum. in Syaboten 4: 175. 1933 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne var. senile (Fric) Okum. in Syaboten 4: 175. 1933 syn. sec. Guzmán & al. 2003
- =Echinocactus capricornis var. niveus K. Kayser in Kakteenkunde 1933: 32. 1933 syn. sec. Guzmán & al. 2003
- =Astrophytum crassispinum (H. Moeller) W. Haage & Sadovsky, Kakteen And. Sukk. 8. 1957 syn. sec. Guzmán & al. 2003
- =Astrophytum niveum (Kayser) W. Haage & Sadovsky, Kakteen And. Sukk. 9. 1958 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne f. aureum (H. Moeller) Krainz, Kat. ZSS, ed. 2: 36. 1967 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne f. crassispinum (H. Moeller) Krainz, Kat. ZSS, ed. 2: 36. 1967 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne f. minus (Runge & Quehl ex H. Moeller) Krainz, Kat. ZSS, ed. 2: 37. 1967 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne f. niveum (K. Kayser) Krainz, Kat. ZSS, ed. 2: 37. 1967 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne subsp. senile (Fric) Doweld in Sukkulenty 3: 36. 2000 syn. sec. Guzmán & al. 2003
- =Astrophytum capricorne subsp. sanjuanense Pavlícek in Kaktusy (Brno) 47: 5. 2011 syn. sec. Hunt 2013