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Information Rhizome up to 90 cm. long and 10 cm. in diam., erect or procumbent, with tufted fronds and with very narrowly linear attenuate entire rhizome-scales up to 3.5 cm. long with a dark-brown central stripe and paler borders. Frond erect to suberect. Stipe pale-brown, up to 20 cm. long, glabrous except for the base which is densely set with scales similar to the rhizome scales. Lamina up to 1.4 x 0.36 m., narrowly oblong in outline, acute with a narrowly oblong acute terminal segment, base with up to 9 pairs of basal pinnae gradually reduced, the lowermost rudimentary. Sterile pinnae up to 22 x 2.4 cm., very narrowly oblong acute, subsessile with an unequally cuneate base, entire, usually revolute, glabrous on both surfaces except for minute brown lanceolate scales up to 1.5 mm. long along the costae; fertile pinnae up to 22 x 0.3 cm., linear, acute to rotund at apex, subsessile to very shortly petiolate. Rhachis pale-brown, glabrous at maturity. Sori linear, extending almost the whole length of the fertile pinnae; indusium pale-brown, c. 1.5 mm. broad, linear, lacerate at maturity.

Information Plants terrestrial. Rhizome erect or decumbent, to 900 mm long, to 100 mm in diameter, closely set with roots, crowded persistent stipe bases and scales, scales chartaceus, concolorous and/or bicolorous, bicolorous scales ferrugineous to stramineous with a castaneus, narrow central stripe, sessile, lanceolate-flagelliform to linear-attenuate, cordate to cordate-imbricate, entire or with a few short marginal outgrowths near the base, apex terminates in an oblong thin-walled cell, to 23 mm long, to 3 mm wide. Fronds crowded, caespitose, erect, dimorphic, fertile usually overtop the sterile, sterile to 1.2 m long, fertile to 1.25 m long; stipe rigid, proximally castaneus, stramineous higher up, adaxially sulcate, sterile to 60 mm long, to 6 mm in diameter, fertile to 110 mm long, to 8 mm in diameter, set with unicellular cylindrical glands to 112 (m long, and scales, smaller scales filiform, larger scales similar to those on the rhizome; lamina 1-pinnate, sterile oblong-obtuse to oblong-acute, gradually reduced towards the base, basal pinnae widely spaced, more closely spaced and often imbricate towards the apex, to 1.1 m long, to 300 mm wide, with up to 14 free pinna pairs, fertile oblong-obtuse, gradually reduced towards the base, basal pinnae widely spaced, more closely spaced to crowded higher up, to 1.14 m long, to 230 mm wide, with up to 42 pinna pairs; rachis firm, stramineous, adaxially sulcate, sulcus not open to that of the costae, pronounced abaxially, variously set with glands and scales similar to those on the stipe; pinnae coriaceus, pale green, sterile sessile, oblong-cuneate, entire, base inaequilateral, acroscopically narrowly cuneate, basiscopically cuneate to obtuse, gradually basiscopically decurrent along the rachis towards the apex, to 190 mm long, to 17 mm wide, fertile sessile, linear, to 215 mm long, to 4 mm wide, adaxially with scattered unicellular cylindrical glands to 112 (m long, abaxially with glands and scales, scales initially closely set along the costa, chartaceus, ferrugineous to stramineous, sessile, lanceolate-flagelliform to filiform, cordate to narrowly cuneate, entire, or irregularly set with scattered marginal outgrowths, apex terminates in an oblong thin-walled cell, to 11 mm long, to 0.5 mm wide; costa adaxially shallowly sulcate. Venation adaxially obscure, evident abaxially, forked, in the sterile, free branches end near the margin, in the fertile the veins anastomose to form a continuous near-marginal vascular commissure. Sori linear, extending most of the pinna length; indusium firmly chartaceus, brown, near-marginal, linear, lacerate; sporangium long-stalked, simple, 3-seriate below capsule, capsule broadly elliptic in lateral view, with (16-)19(-20) indurated annulus cells, epistomium (6-)7(-9)-celled, hypostomium (4-)6(-8)-celled. Spores 64 per sporangium, brown, elliptic, monolete, with low reticulate ridges, granulate, (58-)63.29(-72) x (46-)49.52(-54) (m. Figure 45D & E.

Information Rhizomes 3– 15 cm in diameter including scales, erect, to 100 cm tall; scales 25– 35≈ 1– 2 mm, linear-lanceolate, dark brown to blackish with paler margins. Stipes 4– 52≈ 0.3– 0.6 cm, longer in fertile than in sterile fronds. Fronds erect, pinnate, fertile and sterile laminae similar in size, 40– 120≈ 3– 25 cm, narrowly elliptic in outline, middle pinnae bluntly acute to acuminate at apex, middle sterile pinnae free or adnate on basiscopic margin, middle fertile pinnae free, lower pinnae reduced, sometimes to auricles, longest sterile pinnae 7– 18≈ 0.8– 2.2 cm, very narrowly elliptic to cuneate base, margin entire, often inrolled, longest fertile pinnae linear, 4– 15≈ 0.2– 0.6 cm. Sori extending along most of fertile pinnae, unbroken, indusium lacerate, 0.5– 2 mm wide. Fig. 1/6 (p. 3).