Epithelantha pulchra (D. Donati & Zanov.) Aquino & S. Arias Epithelantha pulchra (D. Donati & Zanov.) Aquino & S. Arias in Syst. Bot. 44 (3): 612. 2019 sec. Aquino & al. 2019=Epithelantha pachyrhiza subsp. pulchra D. Donati & Zanov. in Piante Grasse 30: 185. 2010 syn. sec. ???