What is "crupina"

Crupina is a small genus of plants in the thistle tribe within the daisy family.

The common crupina Crupina vulgaris is a notorious noxious weed on several continents. The other species, Crupina crupinastrum, also has the potential to become weedy, but it is not as bad a pest at the current time. These are thistle-like plants with bright deep pink flower heads.

1. Crupina crupinastrum (Moris) Vis. - southern Europe, northern Africa, southwestern Asia
2. Crupina intermedia (Mutel) Walp. - North Africa, Iran, Iraq, Turkey, Armenia
3. Crupina pseudocrupina (Mutel) Walp. - Greece
4. Crupina strum (Moris) Vis. - Croatia
5. Crupina vulgaris Pers. ex Cass. - native to Europe, North Africa, and Asia as far east as Xinjiang; naturalized in China, North America, Australia, etc., and considered a noxious weed in some places