Plants 50-90 cm tall. Rhizome ascending, short, ca. 1 cm in diam., apex densely scaly; scales dark brown, brown at margin, linear-lanceolate, ca. 3 mm. Fronds clustered; stipe straw-colored, 30-50 cm, 2-4 mm in diam., with dark brownish scales, glabrous, adaxially grooved; rachis similar; lamina 2(or 3)-pinnatipartite, ovate to ovate-triangular in outline, 25-45 × 17-24(-30) cm; lateral pinnae 3-6(-9) pairs, basal pairs opposite, 4-8 cm apart, decumbent, rarely slightly decumbent, basal pair sessile or shortly stalked, often with a basiscopic pinnule near base similar to main part of pinna but smaller; upper pairs sessile, base attenuate, broadly cuneate, pectinate and forming narrow wings along costae, apex linear-caudate, 2-3(-4.5) cm, acuminate; terminal pinna similar but wider and stalked (2-4 cm); segments 20-30 pairs, alternate or opposite, conjoined or ca. 1 mm apart (fertile segments up to 2 mm apart), decumbent, falcate, broadly lanceolate, usually basiscopic segments longer than acroscopic segments, basal pair or several pairs of segments shortened at base, entire, apex obtuse; costae abaxially prominent, straw-colored, glabrous, grooved adaxially, with needlelike flat spines on both sides of groove, and few spines on costa; veins conspicuous on both surfaces, oblique, 2-forked at base, basiscopic vein of segment arising from rachis, and acroscopic vein arising from base of costa, opposite veins at base oblique up to margin of incision; lamina light green to pale green, papery when dried, glabrous (rarely glabrescent when young). Indusia gray-brown, linear, membranous, persistent. n = 29, 2n = 58, 87, 89. Plants 50-90 cm tall. Rhizome ascending, short, ca. 1 cm in diam., apex densely scaly; scales dark brown, brown at margin, linear-lanceolate, ca. 3 mm. Fronds clustered; stipe straw-colored, 30-50 cm, 2-4 mm in diam., with dark brownish scales, glabrous, adaxially grooved; rachis similar; lamina 2(or 3)-pinnatipartite, ovate to ovate-triangular in outline, 25-45 × 17-24(-30) cm; lateral pinnae 3-6(-9) pairs, basal pairs opposite, 4-8 cm apart, decumbent, rarely slightly decumbent, basal pair sessile or shortly stalked, often with a basiscopic pinnule near base similar to main part of pinna but smaller; upper pairs sessile, base attenuate, broadly cuneate, pectinate and forming narrow wings along costae, apex linear-caudate, 2-3(-4.5) cm, acuminate; terminal pinna similar but wider and stalked (2-4 cm); segments 20-30 pairs, alternate or opposite, conjoined or ca. 1 mm apart (fertile segments up to 2 mm apart), decumbent, falcate, broadly lanceolate, usually basiscopic segments longer than acroscopic segments, basal pair or several pairs of segments shortened at base, entire, apex obtuse; costae abaxially prominent, straw-colored, glabrous, grooved adaxially, with needlelike flat spines on both sides of groove, and few spines on costa; veins conspicuous on both surfaces, oblique, 2-forked at base, basiscopic vein of segment arising from rachis, and acroscopic vein arising from base of costa, opposite veins at base oblique up to margin of incision; lamina light green to pale green, papery when dried, glabrous (rarely glabrescent when young). Indusia gray-brown, linear, membranous, persistent. n = 29, 2n = 58, 87, 89.General Information
Source: [
Flora of China @ efloras.org
General Information
