Rhizome ascending. Stipes stramineous, tufted, 15-30 cm long, scaly near base; scales thin, brown, lanceolate; lamina ovate, trupinnatifid, 20-30 cm long, 12-15 cm wide; texture herbaceous; pinnae somewhat ascending, acuminate, often acudate, 5-10 cm long, 25-35 cm wide, petiolate, basal pair of pinna usually slightly shorted; pinnuiles petiolate, anadromous, flandular pubescent n upper surface along rachis and rachillae; prominent spine-like processes borne on upper surface along rachis and costae. Indusia broad, brown erose; ;inear, curved, J-shaped or reniform, often crossing veinlets.
Taiwan, China, Japan.
Habitat: Understory of Forest
Leaf shape: Deltoid
Apex of Leaf: Acuminate
Leaf Division: Tripinnatifid
Length of Stipe: 10 (5-30)
Length of Lamina: 20 (15-40)
Width of Lamina: 25 (15-30)
Stipe Color: Stramineous
Free Pinnulate in basal Pinnae: Yes
Form of basal Pinnulate arrangement: Opposite
Apex of Pinnae: Acuminate
Petioled in pinnae: Obvious Petiole (more than 3 mm)
Lowest pinnae with enlarged basiscopic pinnules (more than 3 mm): No, less than 3 mm
Apex of terminal fragment: Acute
Margin of terminal fragment: Serrulate
Type of Basal of Pinnule: 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: Long-soft spines
Spines Existing on Adaxial Costulate: Yes, spines Existing on costulate
Type of Scales on Basal Stipe: Ovate
Color of Scales on Basal Stipe: Yellow Brown
With Adventitious Bud near the Apex of Leave: No, adventitious buds absent
Sori Shape: Short straight
Sori Position: Closed to midrib
Type of Rhizome: Short Erect
Geographic Distribution: Taiwan - Himalaya, Taiwan - Japan
Altitude: 2000 (1700-2500)
