- bristle fern, filmy fern - 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
--1 is a kind of fern
--1 is a member of Trichomanes, genus Trichomanes
--1 has particulars:hare's-foot bristle fern, Trichomanes boschianum; Killarney fern, Trichomanes speciosum; kidney fern, Trichomanes reniforme - filmy fern, film fern - any fern of the genus Hymenophyllum growing in tropical humid regions and having translucent leaves
--2 is a kind of fern
--2 is a member of Hymenophyllum, genus Hymenophyllum