Jerarquía taxonómica:
Ostreopsidaceae → Alexandrium gaarderae Nguyen-Ngoc & J. Larsen, 2004

Familia:
Ostreopsidaceae

Autor:
Nguyen-Ngoc & J. Larsen, 2004

Sinónimos:
Goniodoma concavum Gaarder, 1954
Alexandrium concavum (Gaarder) Balech, 1985
Gonyaulax concava (Gaarder) Balech, 1967