Dataset: All Collections
Taxa: Mammillaria inaiae, Mammillaria grahamii ssp. sheldonii (Mammillaria guirocobensis, Mammillaria inaiae, Mammillaria gueldemanniana, Mammillaria sheldonii, Mammillaria swinglei, Mammillaria marnieriana, Mammillaria alamensis, Mammillaria milleri var. sheldonii)
Search Criteria: excluding cultivated/captive occurrences