Cardium exiguum Gmelin, 1791
Cardium aquilinum Mittre, 1842
Cardium helleri Brusina, 1865
Cardium exiguum var. albina B.D.D., 1892 ; B.D.D., 1892 ex Monterosato ms.
Cardium exiguum var. commutata B.D.D., 1892
Cardium exiguum var. flavida B.D.D., 1892 ; B.D.D., 1892 ex Monterosato ms.