Also classified as Pellaea lyngholmii Windham.
• Pellaea lyngholmii (Lyngholm's cliffbrake) | USDA PLANTS Database (About This Site)
• Pellaea lyngholmii | Biota of North America Project (BONAP) (About This Site)
• Hemionitis lyngholmii (Windham) Christenh. | Plants of the World Online (POWO) (About This Site)