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Plants terrestrial, epilithic, or rarely epiphytic. Rhizome decumbent, to 200 mm long x 20 mm in diameter, densely set with roots, persistent stipe bases, and paleae; paleae ferrugineous, membranous to chartaceous, narrowly ovate or lanceolate, to 7 x 2 mm. Fronds caespitose, to 7 per plant, arcuate, to 1.47 m long: stipe proximally castaneous, stramineous distally, adaxially sulcate, to 670 mm long x 8 mm in diameter, proximally densely paleated; larger paleae broadly attached, concolorous or bicolorous, the concolorous paleae ferrugineous, the bicolorous paleae centrally dark brown or black, ovate, narrowly ovate, or narrowly oblong, cordate, entire or with short and/or long marginal outgrowths proximally, the apex flagelliform, terminating in a long filiform cell or an oblong thin-walled cell, to 37 x 8 mm; smaller paleae concolorous, ferrugineous, membranous, narrowly ovate, lanceolate, narrowly triangular, narrowly oblong to acicular, cordate, cordate-imbricate, or short-stalked, proximally erose and/or with long twisted, filiform outgrowths, the apex flagelliform, terminating in a filiform cell or an oblong thin-walled cell: lamina 1-pinnate (rarely 1-pinnate-pinnatifid), oblong to narrowly elliptic, with up to 37 free pinna pairs, to 840 mm long, the proximal pinnae slightly reduced, usually deflexed: rachis stramineous, adaxially sulcate, moderately paleated; paleae short-stalked, ferrugineous, membranous to chartaceous, narrowly ovate, narrowly lanceolate, or oblong to subulate, cordate, cordate-imbricate, proximally usually erose and/or with a few short or long twisted marginal outgrowths, the apex long-attenuate to flagelliform, terminating in an acicular cell or an oblong thin-walled cell, to 3 mm long: pinnae firmly herbaceous, olive-green adaxially, paler abaxially, generally not overlapping, short-stalked, narrowly oblong-attenuate, straight, auriculate acroscopically, the base unequally broad-cuneate to truncate, doubly serrate, to 168 mm long x 16 mm wide, the acroscopic auricle on proximal pinnae often free, ovate to trullate, to 24 x 22 mm; costa adaxially sulcate, sparsely paleated, the paleae taeniform, sessile or short-stalked, entire, the apex terminating in an acicular cell or an oblong thin-walled cell, to 3 mm long, abaxially moderately to densely paleated, the paleae ferrugineous, membranous, narrowly lanceolate to narrowly trullate, often bullate, cordate to cordate-imbricate, the margin proximally with short and/or long irregular outgrowths, entire distally, the apex terminating in an acicular cell or an oblong thin-walled cell, to 2.4 mm long. Venation raised. Sori circular, to 1.5 mm in diameter, variable in size, those closest to the costa largest, discrete at maturity, medial to inframedial on unabbreviated vein branches: sporangium with 12-(16)-28 indurated annulus cells; stalk eglandular: indusium brown, persistent, peltate, circular to irregular, repand to erose, often with flabellate central processes, the maximum radius 0.29-(0.49)-0.7 mm. Spores 64 per sporangium, brown, the perispore folded to form a sparse reticulum of low compressed ridges, variously granulate, verruculate to echinulate, closely perforated, the exospore 40-(51.31)-66 x 28-(37.89)-48 µm.
Rhizome creeping. Fronds arching; stipe pale brown to stramineous, darker basally, set with scales more numerous basally; lamina thinly coriaceous, broadly lanceolate, pinnate, the basal pinnae only slightly reduced, rarely 2-pinnate; pinnae broadly linear, acuminate, up to 170 x 25 mm, developed acroscopically at base (this lobe sometimes completely separate in lower pinnae, up to 28 mm long), adnate acroscopically or shortly petiolate, outline of base a right angle, margin serrate-dentate lower surface set with somewhat fimbriate, pale to ferrugineous scales, especially along costa, upper surface set with occasional hair-like scales; rhachis stramineous, set with ferrugineous, linear attenuate scales with very fimbriate bases; costae sulcate ventrally. Sori c.1.5 mm in diameter; indusium brown, erose, c. 4 mm in diameter.
Rhizome creeping. Lamina pinnate. Pinnae up to 170 x 25 mm, broadly linear, serrate-dentate except for a basal acroscopic lobe. Sori round, in I or 2 lines on both sides of costa.
