⚠ Version 1 of The Plant List has been superseded.

This name is in version 1.1 of The Plant List, record tro-50203833, with some changes.

Mammillaria polythele var. aciculata (Otto ex Pfeiff.) Salm-Dyck is a synonym of Mammillaria aciculatus Otto ex Pfeiff.

This name is a synonym of Mammillaria aciculatus Otto ex Pfeiff..

The record derives from Tropicos which reports it as a synonym (record 50203833).