Turbinicarpus schmiedickeanus v. schwarzii

Turbinicarpus schmiedickeanus v. schwarzii
	;
Scientific classification
Kingdom:	Plantae;
Division:	Magnoliophyta;
Class:	Magnoliopsida;
Order:	Caryophyllales;
Family:	Cactaceae;
Subfamily:	Cactoideae;
Tribe:	Cacteae;
Genus:	Turbinicarpus; (Backeb.) Buxb.& Backeb.
Species:	T. schmiedickeanus;
Variety:	schwarzii;
Trinomial name
	Turbinicarpus schmiedickeanus v. schwarzii; (Shurly) Glass & Foster

Turbinicarpus schmiedickeanus v. schwarzii is also classified as Turbinicarpus polaskii.

Wikipedia has an article on Turbinicarpus.