The name of this plant, Carduus euboicus, has a question mark before it as it has never been recorded anywhere except Mount Dirphys on the island of Evia, from which it derives its name.

It is similar to C. nutans, but differs from it in that it is a narrower plant with fewer leaves. The flowers are smaller and occur both on vertical stems and without a stem in the axil of some of the leaves. the leaves are narrow with spiny teeth, each of whch has 3 divisions each tipped with a thorn.

Further investigation will be needed to confirm the identity of the plant.