⚠ Version 1 of The Plant List has been superseded.

This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Melocactus ruestii in version 1.1 of The Plant List.

Melocactus ruestii K. Schum. is a synonym of Melocactus curvispinus subsp. curvispinus

This name is a synonym of Melocactus curvispinus subsp. curvispinus .

The record derives from Tropicos which reports it as a synonym (record 5101091) with original publication details: Verz. Kakt. 26 26 1896.