Cephalocereus columbianus
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Cephalocereus columbianus Britton & Rose [Synonym] = Pilosocereus lanuginosus (L.) Byles & G.D.Rowley (Cactaceae)
Engish:
columbianus,-a,-um
homotypic synonyms:
Mammillaria columbiana subsp. yucatanensis (Britton & Rose) D.R. Hunt;
protologue: Contr. U.S. Natl. Herb. 12: 416 (1909)