Mammillaria compressa 'Rubispina'

Has long upstanding spines reddish brown in upper third.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Caryophyllanae
order      Caryophyllales
family       Cactaceae
genus        Mammillaria Haw.
species         Mammillaria compressa D C.