| Noun | 1. | bristle 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 banksfern - any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores genus Trichomanes, Trichomanes - bristle ferns; kidney ferns hare's-foot bristle fern, Trichomanes boschianum - a variety of bristle fern Killarney fern, Trichomanes speciosum - large stout fern of extreme western Europe kidney fern, Trichomanes reniforme - large fern of New Zealand having kidney-shaped fronds |