Obregonia denegrii (Artichoke Cactus) is a cactus with a solitary squashed globular stem with triangular, spirally arranged tubercles…
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.
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