Description:
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Rhizome erect, scaly; rhizome scales very large, dark brown, of two types, long filiform, extremely fragile, thus almost all broken, larger scales with broad base, more than 18.38 x 1.95 (base) mm, smaller scales linear, more than 15.3 x 0.74 (base) mm. Fronds monomorphic, tufted. Stipes 40–47(–108) × 0.7 cm, light green, at base dark brown, canaliculate, base with scales similar to those from rhizome. Lamina 2–pinnate–pinnatifid to nearly 3–pinnate, triangular–ovate, 59–69(–105) × 47.5–64 cm, green, shiny on upper surface; pinnae in ca. 15–18 pairs, alternate, arranged at an angle of ca. 45°, (15.3–)23.7–34 × 14.5–17 cm; pinnules in 12–14(–19) pairs in each pinna, opposite, (4.5–)5.1–6.6(–9.2) × 1.6–2.3(–4.5) cm, oblong–lanceolate; pinnules 3 rd order in 6–10(–12) pairs tapering into the caudate apex, opposite, 0.9–1.1 × 0.4–0.6 cm, decurrent, deeply incised; rachis greenish–brown to middle– brown, with few scales, pinnae rachis light–brown to greenish, base often darker, with few scales, sometimes minutely hairy; racheolule mostly winged. Sori in basic pinnule lobes up to 6 sori, in all other sori usually in two rows along midrib, 6–8(11), elongate, 1.98–2.95 × 0.71–0.98 mm; indusium elongate, pale, glabrous, same size as sori attached to one side of sorus (asplenioid). |