形态特征：Rhizomes short-creeping, densely covered with concolorous, linear lanceolate, black-brown scales. Fronds clustered, 60–90 cm long , nearly monomorphic; stipes 30–40 cm long, 2–3 mm thick, stramineous or abaxially red, sparsely scaly at base, grooved on adaxial surface; laminae green, chartaceous, ovate to lanceolate, single-axis, 15–50 cm long, 15–25 cm wide, bipinnatisect; lateral pinnae 5–9 pairs, subopposite, pinna angle against rachis 65–80°, straight, bearing one pair of exaggerated basiscopic pinnules; pinnae straight, oblong lanceolate, 2–3.5 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 60–70°; pinnules of pinnae falcate, 3–5 mm wide, apex acute, margins entire; veins forked, free. Sori along pinna margins; pseudoindusia entire; spore number 32.
