Not an accepted name (status: unknown). The accepted name is Carduus arabicus subsp. arabicus.

Carduus pycnocephalus subsp. marmoratus (Boiss. & Heldr.) P.H.Davis, 1784 4% complete

No common name

(1975). Notes Roy. Bot. Gard. Edinburgh 33(3)

There is no corrections for Carduus pycnocephalus subsp. marmoratus yet.