\Tri*chom"a*nes\, n. [L., a kind of plant, from Gr.
?.] (Bot.)
Any fern of the genus {Trichomanes}. The fronds are very
delicate and often translucent, and the sporangia are borne
on threadlike receptacles rising from the middle of
cup-shaped marginal involucres. Several species are common in
conservatories; two are native in the United States.