Korea Flora: Habit: Perennial herb; rhizome short, obliquely ascending; leaves fasciculate.
Stipe: 15-30 cm long; densely scaly at base, sparsely scaly above along with rachis.
Scales: Brown to dark brown, lanceolate; margins entire.
Blade: Pentagonal-broadly-ovate, apex acute; tripinnate; 15-30 cm × 10-22 cm.
Pinnae: Elongate-ovate, stalked; basal pair largest.
Pinnules: Ovate-oblong; apex obtuse; shortly stalked; 1-2 cm × 4-12 mm; deeply to shallowly pinnatifid; basal pinnules pinnate. Ultimate Segments: Oblong; apex obtuse; margins serrate; 2-3 mm wide; abaxial surface with hair-like scales.
Sori: Submarginal; indusium round-reniform with entire margins.
Habitat: Growing in mountainous regions.
Note: Characterized by submarginal sori and hair-like scales on abaxial surface of segments.

[Translated from Flora of Korea by T.B. Lee]