Artichoke cactus
Obregonia, the artichoke cactus, is a genus of cacti
-See also:* RRDtool The underlying software upon which Cacti is built* MRTG The original Multi Router Traffic Grapher from which RRDtool was "extracted".* Munin -External links:******...

 with a single species, Obregonia denegrii. The genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 Obregonia is named after Álvaro Obregón
Álvaro Obregón
General Álvaro Obregón Salido was the President of Mexico from 1920 to 1924. He was assassinated in 1928, shortly after winning election to another presidential term....

. This rare species resembles an inverted green pine cone
Conifer cone
A cone is an organ on plants in the division Pinophyta that contains the reproductive structures. The familiar woody cone is the female cone, which produces seeds. The male cones, which produce pollen, are usually herbaceous and much less conspicuous even at full maturity...

 with a woolly center. It grows slowly in culture and requires little water. It is benefited by full sun and is multiplied by seed.

It may have traditional uses as medicine or a psychoactive. It is one of the closest living relatives of Lophophora williamsii.
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