Plantae > Tracheophyta > Magnoliopsida > Caryophyllales > Cactaceae > Mammillaria backebergiana > Mammillaria backebergiana ernestii Mammillaria backebergiana ernestiiSynonyms: Mammillaria backebergiana var. ernestii; Mammillaria ernestii (homotypic); Mammillaria isotensis
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