Do Waldsteinia and Obregonia contain the same number of species?
Obregonia Obregonia, the artichoke cactus, is a genus of cacti with a single species, Obregonia denegrii. The species is endemic to the state of Tamaulipas in Mexico.
Franz de Paula Adam von Waldstein Franz de Paula Adam Norbert Wenzel Ludwig Valentin von Waldstein (14 February 1759 – 24 May 1823) was an Austrian soldier, explorer and naturalist.