Rhizome long-creeping, 2-2.5 cm diam., covered in red-brown hairs. Stipes 7-23(45) cm long, 1- 3.5 mm diam., dark red-brown, bearing abundant colourless or pale-brown glandular hairs up to 2 mm long. Laminae narrowly ovate to ovate, 15-55 × 10-35 cm, bipinnate at apex, tripinnate at base. Rachis dark red-brown at base becoming paler above and often green at apex, densely covered in colourless or pale-brown glandular hairs up to 1.5 mm long. 1ry pinnae in 15-30 pairs + pinnatifid apex, opposite or alternate, lower arising at (20)30- 70°, upper ones at 70-90°, longest ones below the middle 5-20 × 2-9 cm; lowest pairs 3-10 cm apart, middle ones 1.5-5 cm apart; upper ones parallelsided or narrowly ovate, lower ones ovate or narrowly ovate. 2ry pinnae ovate to ± parallel-sided, longest 0.5-4.5 × 1-2 cm, those on the lower pinnae decreasing markedly in length along the pinnae. 3ry pinnae up to 0.6 × 1.0 cm, deeply incised on larger specimens, bearing 1-3 pairs of sori. Veins reaching margin at a tooth apex. Hairs: colourless glandular hairs (0.3-0.7 mm on laminae, up to 1 mm on midribs) interspersed with a few bristly colourless hairs densely covering both surfaces of lamina, lamina margins, and pinna midribs and costae. Sori in 1-3 pairs on ultimate pinnules, originating away from margin, slightly protected by reflexed margins of pinnules. Spores very pale under light microscope, perispores of inter-connecting flattened projections, (28)31-34(36) × (18)20- 22(25) mcm (5 populations). See Fig. 4A, 10, and 18C.

Rhizoma repens, 2-2.5 cm diametro, pilis rufescentibus. Stipes 7-23(45) cm longus, 1-3.5 mm diametro, rufescens, pilis multis glanduliferis hyalinis vel ferrugineis usque ad 2 mm longos. Lamina anguste ovata vel ovata, 15—55 × 10-35 cm, apice bipinnata, basi tripinnata. Rhachis basi rufescens, in medio ferruginea, apice viridis, pilis multis glanduliferis hyalinis vel ferrugineis usque ad 1.5 mm longos. 1ry pinnae 15-30-jugatae cum apice pinnatifido, oppositae vel alternae, inferiores ad angulum (20)30-70°patentes, superiores ad angulum 70- 90° patentes, longissimae infra medium 5-20 × 2-9 cm; infimae 3—10 cm distantes, medianae 1.5—5 cm distantes; superiores lineares vel anguste ovatae, inferiores ovatae vel anguste ovatae. 2ry pinnae ovatae vel ± lineares, longissimae 0.5-4.5 × 1-2 cm, inferiorum 1ry pinnarum apicem versus longe valde decrescentes. 3ry pinnae usque ad 0.6 × 1.0 cm, profunde incisae, soris 1-3-jugatis. Venae marginem attingentes, in apicibus dentium terminantes. Margines, paginae costaeque pinnarum pilis multis glanduliferis hyalinis (0.3-0.7 mm longis in laminis, usque ad 1 mm in costis), pilis paucis setosis hyalinis interspersis, dense vestiti. Sori 1-3-jugati, in pinnulis ultimis, procul a margine exorientes, retlexis pinnularum marginibus partim obtecti. Sporae pallidae, perisporae projecturis complanatis interconnexis, (28)31-34(36) × (18)20- 22(25) mcm.