''Acanthocalycium thionanthum'' subsp. ''ferrarii'' is a

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics ( morphology), but that can successfully interbreed. Not all specie ...

of ''

Acanthocalycium ''Acanthocalycium'' is a genus of cactus consisting of several species from Argentina. The taxon name comes from Greek ''akantha'' (meaning ''prickly'') and ''kalyx'' (meaning ''buds''), which refers to the spines on the floral tubes. These plan ...

'' from

Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the List of South American countries by area, second-largest ...

. It can grow to up to 12 centimeters in diameter and produces red, orange, or yellow flowers.

References

External links

* * thionanthum subsp. ferrarii Flora of Argentina {{Cactus-stub