Mammillaria retusa:
Mammillaria retusa:
Mammillaria retusa Pfeiff., Cactaceae: See Coryphantha retusa (Pfeiff.) Britt. & Rose.
Mammillaria retusa Scheidw. ex Labour., Cactaceae: See Coryphantha elephantidens (Lem.) Lem.
Mammillaria retusa Pfeiff., Cactaceae: See Coryphantha retusa (Pfeiff.) Britt. & Rose.
Mammillaria retusa Scheidw. ex Labour., Cactaceae: See Coryphantha elephantidens (Lem.) Lem.