Aeonium arboreum 'Zwartkop'

Leaves blackish purple.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     [Saxifraganae]
order      Saxifragales
family       Crassulaceae
genus        Aeonium Webb & Berth.
species         Aeonium arboreum (L.) Webb & Berth.