Hymenophyllaceae
Fronds delicate, translucent, usually 1 cell thick, lacking stomates. Receptacle elongated and columnar. Epiphytic or rupestral ferns under 12 cm high Hymenophyllaceae
Fronds 1-pinnate with the lower pinnae often again imperfectly pinnate. Ultimate segments pinnately veined. Rhizome 0.2–0.3 mm diam., densely tomentose with orange hairs Crepidomanes
Fronds pinnately decompound. Ultimate segments 1-veined. Rhizome 1–10 mm diam., clothed with dark red, bristle-like hairs Cephalomanes