Neolloydia conoidea (DC.) Britton & Rose in Bull. Torrey Bot. Club 49: 252. 1922 sec. Hunt 2016
- ≡Mammillaria conoidea DC. in Mém. Mus. Hist. Nat. 17: 112. 1828 syn. sec. Guzmán & al. 2003
- =Mammillaria grandiflora Otto ex Pfeiff., Enum. Diagn. Cact.: 33. 1837 syn. sec. Guzmán & al. 2003
- =Mammillaria ceratites Quehl in Monatsschr. Kakteenk. 19: 155. 1909 syn. sec. Guzmán & al. 2003
- =Neolloydia ceratites (Quehl) Britton & Rose, Cactaceae (Britton & Rose) 4: 16. 1923 syn. sec. Guzmán & al. 2003
- =Neolloydia texensis Britton & Rose, Cactaceae (Britton & Rose) 4: 18. 1923 syn. sec. Guzmán & al. 2003
- =Coryphantha ceratites (Quehl) A. Berger, Kakteen (Berger): 266. 1929 syn. sec. Guzmán & al. 2003
- =Coryphantha conoidea (DC.) Orcutt ex A. Berger, Kakteen 266. 1929 syn. sec. Guzmán & al. 2003
- =Coryphantha grandiflora (Otto ex Pfeiff.) A. Berger, Kakteen (Berger): 266. 1929 syn. sec. Guzmán & al. 2003
- =Neolloydia grandiflora (Otto ex Pfeiff.) F.M. Knuth, Kaktus-ABC: 368. 1936 syn. sec. Guzmán & al. 2003
- =Neolloydia conoidea var. ceratites (Quehl) Kladiwa & Fittkau, Kakteen 48-49: C VIIIb, 1. 6. 1971 syn. sec. Guzmán & al. 2003
- =Neolloydia conoidea var. grandiflora (Otto ex Pfeiff.) Kladiwa & Fittkau, Kakteen 48-49: C VIIIb, 1. 6. 1971 syn. sec. Guzmán & al. 2003
- =Neolloydia conoidea var. texensis (Britton & Rose) Kladiwa & Fittkau, Kakteen 48-49: C VIIIb, 1. 6. 1971 syn. sec. Guzmán & al. 2003
- =Neolloydia grandiflora var. robusta Ríha in Kakteen And. Sukk. 32: 128. 1981 syn. sec. Guzmán & al. 2003
- =Pediocactus conoideus (DC.) Halda in Acta Mus. Richnov., Sect. Nat., 5: 23. 1998 syn. sec. Guzmán & al. 2003