Adiantum trifoliatum Linnaeus, Species Plantarum 2: 1095. 1753.

"Habitat in America." RCN: 7930.

Lectotype (Proctor & Lourteig in Bradea 5: 386. 1990): [icon] " Adiantum clavatum triphyllum" in Petiver, Pteri-graphia Amer.: 99, t. 11, f. 4. 1712.

Current name: Hymenophyllum trifoliatum (L.) Proctor & Lourteig ( Hymenophyllaceae).