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• n  tropical American fern with brown scaly rhizomes cultivated for its large deeply lobed deep bluish-green fronds; sometimes placed in genus Polypodium
• n  mat-forming lithophytic or terrestrial fern with creeping rootstocks and large pinnatifid fronds found throughout North America and Europe and Africa and east Asia

• serpent fern
• rabbit's-foot fern
• Phlebodium aureum
• Polypodium aureum
• common polypody
• adder's fern
• wall fern
• golden maidenhair
• sweet fern
• Polypodium vulgare