Krainzia gracilis (Pfeiff.) Doweld in Novosti Sistematiki Vysshikh Rastenii 33: 169. 2001 Krainzia gracilis (Pfeiff.) Doweld in Novosti Sistematiki Vysshikh Rastenii 33: 169. 2001is new combination for Mammillaria gracilis Pfeiff. in Allg. Gartenzeitung 6: 275. 1838Taxon for this nameKrainzia gracilis (Pfeiff.) Doweld