Korea Flora: Habit: Semi-evergreen herb growing in partially sunlit areas; leaves densely arranged on short, nodular rhizome.
Leaves: About 60 cm long.
Stipe: Shorter than blade, densely scaly along with rachis.
Scales: Up to 2 cm long, diminishing in size upwards; ovate-oblong to lanceolate or linear-lanceolate.
Blade: Ovate-oblong, bipinnate; adaxial surface light yellow-green, wrinkled due to impressed veins; abaxial surface whitish.
Pinnae: Elongate-oblong-lanceolate, apex acute, shortly stalked.
Pinnules: Lanceolate to oblong-lanceolate, 5-8 mm wide; margins serrate; apex acute; auriculate at base on both sides with short stalks at lower portion, sessile at upper portion.
Sori: Covering entire abaxial surface of upper pinnae; indusium round; fertile pinnae withering earlier than sterile ones. Upper Pinnae: Somewhat shortened.
Economic Use: Rhizome used as a substitute for Dryopteris crassirhizoma.
Note: Characterized by whitish undersurface and wrinkled upper surface due to impressed veins.

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