Korea Flora: Distribution: North of Mt. Geumgang
Habit: Evergreen perennial herb growing on rock surfaces and at base of old trees
Rhizome: Creeping horizontally, 1.5-3mm in diameter, sparsely leafed; scales lanceolate, 3-4mm long, with marginal hairs and dark brown central portion
Petiole: Straw-colored, 5-12cm long
Leaf blade: Glabrous on both surfaces; elongated ovate-lanceolate, 7-20cm long, 2.5-5cm wide; pinnately divided to rachis
Pinnae: 15-25 pairs; oblong-lanceolate; margins entire but slightly undulate-serrate near apex; obtuse at tip; 4-7mm wide
Venation: Veins indistinct on both surfaces
Sori: Round, situated closer to margins