Rebutia pygmaea f. atrovirens (Backeb.) Buining & Donald in Sukkulentenkunde 7-8: 102. 1963 Rebutia pygmaea f. atrovirens (Backeb.) Buining & Donald in Sukkulentenkunde 7-8: 102. 1963is new combination for Lobivia atrovirens Backeb., Kaktus-ABC: 242, 414. 1936 ["1935"]Taxon for this nameRebutia pygmaea f. atrovirens (Backeb.) Buining & Donald