Neolloydia conoidea (DC.) Britton & Rose in Bull. Torrey Bot. Club 49: 252. 1922 Neolloydia conoidea (DC.) Britton & Rose in Bull. Torrey Bot. Club 49: 252. 1922is new combination for Mammillaria conoidea DC. in Mém. Mus. Hist. Nat. 17: 112. 1828Taxon for this nameNeolloydia conoidea (DC.) Britton & Rose