Rhizome 1-2 mm thick, internodes to 0.5-1 cm long. Vascular strands with bundle sheath hyaline; sclerenchyma strands few to many. Rhizome scales peltate, appressed (occasionally), or spreading, 2-4 by 0.5-1 mm wide, acute or rarely contracted to a narrow acumen, straw-coloured (rarely), or brown, evenly coloured or with a lighter margin, strongly dentate, rarely short-dentate. Fronds simple, mono-to dimorphic. Fertile fronds with stipe 1.5-11 cm long; lamina 5-28 by 0.2-1.2 cm, widest at 0.3-0.6 from base or linear. Sterile fronds with stipe 0.5-7 cm long; lamina 5.5-19 by 0.4-1.3 cm, index 1.5-20 or more, widest at 0.3-0.6 from base. Venation: costa only distinct; veinlets anastomosing, free veinlets excurrent and recurrent. Hydathodes ab-sent. Margin not differentiated or cartilaginous, flat or thickened; notches regularly present, sporadically to regularly present in fertile fronds. Sori round, in two rows between adjacent veins, in 1-5 rows between costa and margin, 1.5-3 mm wide, superficial.
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