Plants 50-80 cm tall. Rhizome erect, short, robust, 1.5-2 cm in diam., apex with brown scales. Fronds clustered; stipe straw-colored, seldom brown or castaneous, slightly lustrous, 30-50 cm × 3-4 mm, glabrous, basal part scaly, scales caducous; lamina 1-pinnate, oblong-ovate, 35-45 × 25-30 cm; pinnae (3 or)4-6 pairs, opposite, decumbent, linear-lanceolate, 15-20 × 2-3.2 cm, basally broadly cuneate, margin entire, slightly undulate, obviously reflexed, and cartilaginous, apex long caudate; basal pair shortly stalked, middle pairs sessile, upper pairs often connate with rachis and ± decurrent to form narrow wings; terminal pinna with 3 pinnules, not decurrent or slightly decurrent at base; basal pinnae not shortened, lowest 1 or 2 pairs often with basiscopic pinnule; lamina gray-green, thinly herbaceous when dried, glabrous, shiny especially adaxially, smooth; midvein abaxially convex, light straw-colored; veins slender, contiguous, slightly raised on both surfaces, often simple or rarely forked at base.
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