Rhizome erect, stout, covered with persistent stipe bases; scales m\narrowly lanceolate, attenuate, brown to pale brown, stipes stramineous, 8-25 cm long, scaly at base. Lamina deltoid, 18-35 cm long by 14-25 cm wide, bipinnate, pinnae 7-15 cm long, ascending, subsessile or with very short petioles; pinnules usually sessile, or adnate on small fronds, serrulate or denticulate; upper surface with spines along margins of rachilla and costa grooves; basal pinna usually shortened and broader than those above it, basal pinnules of lowest pinna much shortened. Sori oblong, medial, 1-2 mm long; indusia straight or curved and crossing a veinlet.
Korea, Japan, China and Taiwan.
Habitat: Open, un-shaded, Ridge, Edge of forest or side by the trail, Understory of Forest, Valley or near stream
Leaf shape: Deltoid
Apex of Leaf: Abrupt
Leaf Division: Bipinnate
Length of Stipe: 20 (15-25)
Length of Lamina: 35 (25-60)
Width of Lamina: 25 (15-50)
Stipe Color: Purple, Purple to Stramineous, Stramineous, Green
Free Pinnulate in basal Pinnae: Yes
Form of basal Pinnulate arrangement: Opposite
Apex of Pinnae: Acuminate
Petioled in pinnae: Short Petiole (less than 3 mm)
Length of Lowest Pinnae: 15 (10-30)
Wideth of Lowest Pinnae: 7 (5-10)
Lowest pinnae with enlarged basiscopic pinnules (more than 3 mm): No, less than 3 mm
Apex of terminal fragment: Acute
Margin of terminal fragment: Crenate
Type of Basal of Pinnule: Constricted, Petiolulate
Anterior pinna or pinnule auriculate: not auricaulate
Lowest Pinnae with shorter basal pinnule: No, basal pinnule similar with next two pinnules
Second Lowest Pinnae with shorter basal pinnule: No, Basal Pinnulate similar with next two
Abaxial Surface of Rachis with Unicellular Hairs ?: No, glabrous
Abaxial Surface of Rachis with Gland Hairs?: No, there is no gland hairs on it
Abaxial Surface of Coaste with Unicellular Hairs ?: No, there is no unicellular hairs on costae (glabrous)
Type of Adaxial Costae Spines: Short spines
Spines Existing on Adaxial Costulate: Yes, spines Existing on costulate
Type of Scales on Basal Stipe: Lanceolate
Color of Scales on Basal Stipe: Yellow Brown
With Adventitious Bud near the Apex of Leave: No, adventitious buds absent
Sori Shape: Short straight, Curved, Reniform
Sori Position: Middle of veinlet
Type of Rhizome: Short Erect
Geographic Distribution: East Asia
Altitude: 2500 (1500-3000)
