Any fern of the genus Trichomanes having large pinnatifid often translucent fronds; most are epiphytic on tree branches and twigs or terrestrial on mossy banks - bristle fern
Any fern of the genus Hymenophyllum growing in tropical humid regions and having translucent leaves - film fern
Derived forms: filmy ferns
Type of: fern
Part of: genus Hymenophyllum, genus Trichomanes, Hymenophyllum, Trichomanes