Trichomanes is a large genus of ferns in the family Hymenophyllaceae, termed bristle ferns.

The name bristle fern refers to the small bristle that protrudes from the indusia of these ferns.

Order Hymenophyllales (filmy ferns and bristle ferns)

Conservation Assessment for Appalachian Bristle Fern (Trichomanes boschianum) Sturm.

The Hymenophyllaceae (filmy ferns and bristle ferns) is a family of two or more genera and over 600 species of ferns, with a subcosmopolitan distribution, but generally restricted to very damp places or to locations where they are wetted by spray from waterfalls or springs.

Trichomanes, the members of which are also called filmy ferns.

The genus Trichomanes contains about 300 mostly tropical species, including:

A bristle-like receptacle protrudes from the indusium as in all Trichomanes species.

A good example of this is the currently designated species Asplenium trichomanes, the maidenhair spleenwort.

Asplenium trichomanes.

Asplenium azoricum: allotetraploid hybrid by cross between A. anceps and an individual of trichomanes complex.

Asplenium trichomanes, described in 1767 as Asplenium trichmanoides L.

This feature easily distinguishes this species from the very similar-looking maidenhair spleenwort, Asplenium trichomanes.

Asplenium trichomanes has diploid, tetraploid and hexaploid cytotypes, which it has been argued should be recognised as distinct species.

Asplenium reuteri (Asplenium lepidum x A. trichomanes)

Asplenium anceps is a diploid fern of Aspleniaceae family and one of the ancestors of the ferns that form the trichomanes complex.

Asplenium trichomanes (commonly known as maidenhair spleenwort) is a small fern in the spleenwort genus Asplenium.

Filmy ferns (Hymenophyllum species, Trichomanes species) are very vulnerable to desiccation which limits the habitats in which they can survive.

On walls with a more lime-rich mortar the Asplenium trichomanes - Asplenium ruta-muraria community (OV39) can replace it.

Conservation Assessment for Appalachian Bristle Fern (Trichomanes boschianum) Sturm.

Parks JC (1989) Distribution of gametophytic populations of Vittaria and Trichomanes in Pennsylvania.

In the more temperate parts of its range, A. resiliens may be confused with ebony spleenwort (A. platyneuron) and maidenhair spleenwort (A. trichomanes).

Other plants that are largely confined to northern limestone areas include butterwort, Pinguicula vulgaris, maidenhair spleenwort, Asplenium trichomanes, and grass of Parnassus, Parnassia palustris.

In 2011, Atsushi Ebihara and Alan S. Weakley transferred Trichomanes intricatum to Crepidomanes intricatum based on the chloroplast molecular sequence data.

This plant is epiphytic In New Zealand's Westland C. heterophylla occurs in association with other epiphytes such as Asplenium polyodon and Trichomanes reniforme.

Also along here several of us witnessed a large beautiful stand of Maidenhair ferns (Adiantum pedatum) - not to be confused with the the Maidenhair spleenwort (Asplenium trichomanes).

British NVC community OV39 (Asplenium trichomanes - Asplenium ruta-muraria community) is one of the open habitat communities in the British National Vegetation Classification system.

In 1940, A.H.G. Alston described material from Argentina, previously identified with A. trichomanes, as a new species, A. lealii, which he named for its collector, Adrián Ruiz Leal.

Farrar DR, JC Parks, BW McAlpin (1983) The fern genera Vittaria and Trichomanes in the Northeastern United States.

The pinnae of A. resiliens are more widely spaced than those of A. trichomanes, which also lack the upward-pointing auricle, the texture of the leaf tissue is more leathery, and the stipe darker.