Cyclopeltis mirabilis Copel.

Stipe more than 35 cm long, its scales (not well preserved on the type) bearing some marginal teeth; frond-form as C. crenata, a few pairs lower pinnae slightly reduced; the bases of all pinnae strongly auricled on both sides, the auricles narrowly acuminate, the acroscopic one much shorter and narrower than the basiscopic one; largest pinnae c. 16 × 2 cm; sori as in C. crenata but in four rows.