Basionym: Phymatodes digitata Ching, Contr. Inst. Bot. Natl. Acad. Peiping 2(3): 77. 1933; Crypsinus digitatus (Ching) Tagawa; Phymatopsis digitata (Ching) Ching; P. palmatifida Ching & P. S. Chiu; Phymatopteris digitata (Ching) Pichi Sermolli; Polypodium koi C. Christensen.
Rhizome ca. 4 mm in diam., densely scaly throughout; scales light brown, lanceolate, ca. 5 mm, margin entire, apex acuminate. Fronds monomorphic. Stipe castaneous, 2-10 cm, scaly at base, glabrous upward; lamina palmately 2-5-lobed, 5-9 × 5-9 cm, base rounded, margin entire or undulate. Lobes linear, central lobe usually longer than lateral lobes, 5-10 × 1-1.2 cm, apex obtuse or acute. Costa distinct, lateral veins and veinlets obscure. Lamina herbaceous, both surfaces glabrous, abaxial surface glaucous, adaxial surface green. Sori orbicular, close to margin, superficial.
Epiphytic on tree trunks on hill tops; 1000-1400 m. Guangdong, Guizhou, Zhejiang.