⚠ Version 1 of The Plant List has been superseded.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 Coryphantha muehlenpfordtii in version 1.1 of The Plant List.

Coryphantha muehlenpfordtii var. robustispina (Schott ex Engelm.) W. Earle is a synonym of Coryphantha robustispina subsp. robustispina

This name is a synonym of Coryphantha robustispina subsp. robustispina .

The record derives from Tropicos which reports it as a synonym (record 5108424) with original publication details: Cacti Southw. 83 83 1963.