A beautiful hybrid hybrid by Gerhard Marx. He explains the origin:
The bold opaque chocolate flecking found in ‘Black Knight’, ‘Halloween’ and H. splendens ‘Shikinjo’ are all combined in this hybrid with attractive contrasting patterns. Lawrence Loucka is a hybrid between H. splendens ‘Shikinjo’ and a ‘Black Knight’ x ‘Halloween’ hybrid named ‘Nexor’.
Haworthia 'Lawrence Loucka' - the original plant in the collection of Gerhard Marx