Anemia dregeana Kunze

Plants terrestrial or epilithic. Rhizome short-decumbent to suberect, to 4 mm in diameter, closely set with roots, persistent stipe bases and hairs, hairs ferrugineous, pluricellular, uniseriate, to 8 mm long. Fronds crowded, caespitose, hemidimorphic, to 370 mm long; stipe firm, proximally castaneous, stramineous higher up, shallowly sulcate adaxially, to 150 mm long, to 1.6 mm in diameter, proximally densely set with hairs similar to those on the rhizome, higher up moderately set with similar, but shorter hairs; lamina anadromous and/or catadromous, sterile 1-pinnate, oblong-acuminate to narrowly elliptic, with up to 14 petiolated pinna pairs, to 190 mm long, to 58 mm wide, fertile with a pair of highly modified basal pinnae; rachis stramineous, adaxially sulcate, closely haired, hairs thinly crustaceous, ferrugineous, pluricellular, uniseriate, to 2 mm long; pinnae, sterile herbaceous, sessile, broadly ovate to inequilaterally trullate, acute to obtuse, base inequilateral, basiscopically narrowly to broadly cuneate, acroscopically truncate to narrowly cuneate, larger often acroscopically auricled, crenate, to 37 mm long, to 20 mm wide, adaxially and abaxially with hairs similar to those on rachis along veins, to 1.5 mm long, the fertile erect, petiolate, petiole to 125 mm long, to 2-pinnate-pinnatifid, lamina highly skeletonised, to 120 mm long. Venation anadromous and/or catadromous, free, evident, forked, ending near the margin. Sporangia borne singly at vein endings, sessile, ovoid, with a subapical, uniseriate annulus with a well-defined stomium, dehiscing by a vertical slit. Spores numerous, globose to tetrahedral-globose, trilete, with coarse ridges and grooves, the ridges coarsely tuberculate, exospore 50 x 57 µm in diameter.