Information

Plants terrestrial. Rhizome erect to suberect, simple, to 70 mm long, to 5 mm in diameter, densely set with roots, crowded stipe bases, and scales, scales chartaceus, castaneus to ferrugineus, sessile, lanceolate, cordate, margins and scale surfaces set with unicellular acicular hairs, margins also with unicellular oblong and globose, thin-walled cells, apex terminates in a large thin-walled cell, to 7 mm long, to 2 mm wide. Fronds crowded, caespitose, erect to arching, to 740 mm long, to 10 per plant; stipe firm, purple-brown, adaxially sulcate, to 155 mm long, to 3 mm in diameter, proximally densely set with scales similar to those on the rhizome, sparsely scaled distally, densely set with hyaline, unicellular, acicular or uncinate hairs, to 0.4 mm long; lamina 1-pinnate, narrow-elliptic to lanceolate, to 575 mm long, to 190 mm wide, with up to 18 free pinna pairs, several pairs gradually reduced towards the base; rachis purple-brown, adaxially sulcate, sulcus not open to that of the costa, densely set with hairs similar to those on the stipe; pinnae herbaceous, alternate to opposite, spaced, those at the base more widely spaced than those higher up, sessile, oblong-cuneate, to 105 mm long, to 18 mm wide, deeply lobed, lobes dentate to crenulate, to 8 mm long, to 4 mm wide, adaxially closely set with hyaline, unicellular, acicular hairs along and between the veins, abaxially closely set with unicellular, acicular and uncinate hairs on and between the veins; costa adaxially sulcate, pronounced abaxially, set with hairs similar to those on the rachis. Venation proximally anadromous, distally catadromous, evident, pinnately branched in the lobes, branches simple, free, ending in the margin in the sinus between the teeth. Sori circular, medial on the veins, up to 9 pairs per lobe; indusium chartaceus, brown, reniform to subcircular, with unicellular acicular hairs along the margin and on the indusium surface, to 1 mm in diameter; receptacle nude; sporangium long-stalked, 3-seriate below the capsule, simple, capsule circular in lateral view, with (13-)13(-14) indurated annulus cells, epistomium (3-)4(-5)-celled, hypostomium (3-)5(-6)-celled. Spores 64 per sporangium, brown, ellipsoidal, monolete, irregularly reticulate, (48-)54.87(-62) x (28-)29.62(-32) (m. Figure 31F & G.