| 1 | Rhizome scales entire to irregularly denticulate, light reddish brown. |
| 1' | Rhizome scales dentate to ciliate, dark brown to nearly black |
| 2 | Pinnae straight, 0.5-1.5 their width distant, margin flat, crenate, lamina to 7.5 cm wide, rhizome with 30-40 sclerenchyma strands, sori sunken |
| 2' | Pinnae often curved, 1-3 their width distant, margin revolute, sinuose to lobed, lamina to 20 cm wide, rhizome with over 90 sclerenchyma strands, sori superficial or slightly sunken |
