Rhizome (1.2-)2.7-5 mm thick, long-creeping, phyllopods 3-7 cm apart, buds about halfway along the internodes. Anatomy: vascular strands (5-)8-15, sclerenchyma sheath distinct, sclerenchyma strands absent to many, scattered within the vascular cylinder. Rhizome scales spreading, peltate, 8-14 by 1.1-3 mm, base entire, acumen dentate, shining brown. Fronds monomorphic, stalks up to 2 cm long, much shorter than the lamina, lamina 22-62(-97) by 2.5-5.5 cm, index 5-20 or more, base gradually narrowed or truncate, widest below the middle, apex obtuse to (mostly) acute. Venation: veins distinct, veinlets much branched and anastomosing, free veinlets excurrent and recurrent. Hydathodes absent. Stellate hairs mono-to dimorphic, a dense mat, brown to greyish brown, the straight rays acicular. Sori apical, spaced, 1.5-3 mm wide, 2 (rarely 3) in each areole, superficial, developing acropetally. Sporangia stalked, paraphyses with curly rays. Spores with irregular ridges and protuberances.
Home