Coryphantha recurvata (Engelm.) Britton & Rose Coryphantha recurvata (Engelm.) Britton & Rose, Cactaceae (Britton & Rose) 4: 27. 1923 sec. Hunt 2016≡Mammillaria recurvata Engelm. in Trans. Acad. Sci. St. Louis 2: 202. 1863 syn. sec. Guzmán & al. 2003