Hymenophyllum Sm. >
Involucre bivalvate (deeply or to the base) or bivalvate in the upper portion but obconic at the base Hymenophyllum
Margin of the lamina and the axes not clothed with branched hairs
Margin of the lamina denticulate
Involucre bivalvate deeply or to the base
Fronds rhomboidal or palmate, 1-pinnate or 1-pinnate-pinnatifid, 1–2.7 cm long including the stipes. Sori terminal on the ultimate segments. Involucre rounded or oblong, not immersed; the margin minutely spinulose-denticulate. Blue Mts; Illawarra ranges, pass above Kiama. RF. Uncommon Hymenophyllum pumilum