Obregonia denegrii (Artichoke Cactus) is the only representative of its monospecific genus and is related to Ariocarpus. The solitary stem…
Obregonia is a genus of cacti with a single species, Obregonia denegrii. The genus Obregonia is named after Álvaro Obregón, while the species is named after Ramon P. De Negri, who was the Minister of Agriculture of Mexico when the cacti was first discovered.
Click on the photo or the name of the cactus for which you wish to see further information.