形态特征：Rhizomes short-creeping, densely covered with concolorous, linear lanceolate, black-brown scales. Fronds clustered, 30–60 cm long , nearly monomorphic; stipes 10–25 cm long, 2.5–4 mm thick, stramineous or abaxially red, scaly at base, grooved on adaxial surface; laminae green, coriaceous, widely ovate to lanceolate, single-axis to tripartite, 15–40 cm long, 15– 30 cm wide, bipinnatisect; lateral pinnae 3–9 pairs, opposite, pinna angle against rachis 71–80°, straight, bearing 1–4 pairs of exaggerated basiscopic pinnules; pinnae straight, oblong lanceolate, 2–2.5 cm wide, pectinate, sessile, pinnules gradually reduced toward the terminal, apex caudate, 0.5–2 cm long, basal pinnules as long as the other pinnules, length of basiscopic pinnules and acroscopic ones almost the same, basal pinnules of lateral pinnae not decurrent; pinnules against costae 71– 80°; pinnules of pinnae falcate, 3–5 mm wide, apex acute to round, margins entire; veins forked, free. Sori along pinna margins; pseudoindusia entire; spore number 64.
