Rhizome 1.5 mm thick, internodes to 0.5 cm long; vascular strands with bundle sheath hyaline; sclerenchyma strands many. Rhizome scales peltate, spreading, 5.5 by 0.9 mm, contracted to a narrow acumen, brown, with a central pseudocosta and a lighter margin; base dentate; acumen entire. Fronds simple, monomorphic. Stipe 0.5-1.5 cm long (distinction from lamina often not clear). Lamina 5-30 by 0.1-0.2 cm or longer, gramineous. Venation strongly reduced, costa distinct; main veins on upper surface not raised. Hydathodes absent. Margin not differentiated, without notches. Sori elongate (sometimes seemingly forming a coenosorus), in two rows between adjacent veins, in one row between costa and margin, 1 mm wide, in a deep laminar groove.
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