Neolloydia conoidea (DC.) Britton & Rose [ Mammillaria conoidea DC.]
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Neolloydia conoidea (DC.) Britton & Rose [ Mammillaria conoidea DC.] [Cactaceae]
L.K.G. Pfeiffer, F. Otto, Abbild. Beschr. Cact., vol. 2 : t. 26 (1846)