Rhizome 1 mm thick, internodes to 0.5 cm long; vascular strands with bundle sheath fully sclerified; sclerenchyma strands many. Rhizome scales pseudopeltate or peltate, stiffly spreading, 6 by 0.6 mm, contracted to a narrow acumen with a dark pseudocosta, brown-blackish with a lighter hyaline margin, strongly dentate. Fronds simple, strongly dimorphic. Fertile fronds with stipe 1.7-6.5 cm long; lamina 4-10 by 0.2 cm, linear. Sterile fronds with stipe 0.1-6.5 cm long; lamina 1-2.8 by 0.9-1.7 cm, index 1-2, widest at c. 0.5 from base. Venation: costa only distinct; veinlets anastomosing, free veinlets excurrent and recurrent. Hydathodes absent. Margin cartilaginous, strongly thickened; notches indistinct, sporadically present, absent in fertile fronds. Sori confluent across main veins, forming longitudinal coenosori, single between costa and margin, deeply sunken (not raised on upper surface).
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