Carduus acarna Linnaeus, Species Plantarum 2: 820. 1753.

"Habitat in Hispania." RCN: 5979.

Basionym of: Cnicus acarna (L.) L. (1759) .

Lectotype (Turland in Jarvis & Turland in Taxon 47: 356. 1998): Herb. Burser XXI: 26 (UPS) .

Current name: Picnomon acarna (L.) Cass. ( Asteraceae).