Rhizome 4-8 mm thick, phyllopods contiguous or internodes to 0.8 cm long; vascular strands with bundle sheath hyaline; sclerenchyma strands many. Rhizome scales pseudopeltate, spreading, 7-13 by 1.2-2.5 mm, acute, brown, evenly coloured (often with a weak pseudocosta), strongly dentate. Fronds simple, mono-to dimorphic. Fertile fronds with stipe 7-16 cm long; lamina 14-22 by 2.8-5.5 cm or longer, index 4.2-6.1, widest at 0.3-0.6 from base. Sterile fronds with stipe 7.5-18 cm long; lamina 16.5-22 by 3.4-5.9 cm, index 3.7-5.5, widest at 0.3-0.5 from base. Venation: main veins on upper surface raised, distinct; veinlets free and anastomosing, free veinlets excurrent and recurrent. Hydathodes absent, or infrequent, calcareous scales not persistent. Margin cartilaginous, flat or thickened; notches regularly present. Sori round, elongated or confluent across connecting veins to a transverse coenosorus, in one row, or occasionally in 2 irregular rows between adjacent main veins, in 2-4 rows between costa and margin, 2-3 mm wide, superficial.
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