Definition that contains midrib
- dissected having one or more indentations reaching nearly to the midrib
- cleft having one or more indentations reaching nearly to the midrib
- leatherleaf stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib
- pinnatifid (of a leaf shape) cleft nearly to the midrib in broad divisions not separated into distinct leaflets
- pinnatisect (of a leaf shape) cleft nearly to the midrib in narrow divisions not separated into distinct leaflets
- coast polypody stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib
- genus nageia small genus of Asian evergreen trees having columnar crowns and distinguished by leaves lacking a midrib; eastern Asia including India and Philippines and New Guinea
- leathery polypody stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib
- nageia small genus of Asian evergreen trees having columnar crowns and distinguished by leaves lacking a midrib; eastern Asia including India and Philippines and New Guinea
- polypodium scouleri stiff leathery-leaved fern of western North America having ovate fronds parted to the midrib