| Name | Mammillaria williamsii (Lem. ex Salm-Dyck) J.M.Coult. |
| Authorship | |
| Rank | Species |
| Placed in | Mammillaria Haworth |
| Remarks | [imported from GBIF] |
Copyright © 2013 The President and Fellows of Harvard College | Accessibility
| Name | Mammillaria williamsii (Lem. ex Salm-Dyck) J.M.Coult. |
| Authorship | |
| Rank | Species |
| Placed in | Mammillaria Haworth |
| Remarks | [imported from GBIF] |