Epiphytic or epipetric. Rhizomes long-creeping, filamentous, ca. 0.2 mm in diameter.
Fronds mat forming, appearing mosslike, usually less than 1 cm apart, to ca. 1.5 cm long; stipe base with minute blackish hairs; blade 0.5–1 cm long, 0.4–0.7 cm wide, rounded to fan-shaped, deeply incised, ultimate segment linear.
Sori sparse, involucres long, cone-shaped, with flared lips, receptacles exserted.
Latin minutus, little, small, in reference to the frond size.