Oreocereus celsianus var. ritteri Krainz Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Cactaceae genus Oreocereus species Oreocereus leucotrichus Name Homonyms Oreocereus celsianus var. ritteri Krainz Oreocereus celsianus subsp. ritteri (Cullmann) Krainz