View source for Trichomanes intricatum

{{Treatment/ID
|accepted_name=Trichomanes intricatum
|accepted_authority=Farrar
|publications={{Treatment/Publication
|title=Amer. Fern J.
|place=82: 68. 1992
|year=1992
}}
|common_names=Appalachian trichomanes;weft fern
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Hymenophyllaceae;Trichomanes;Trichomanes intricatum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hymenophyllaceae]]</div><div class="higher-taxon"><small>genus</small>[[Trichomanes]]</div><div class="higher-taxon"><small>species</small>[[Trichomanes intricatum]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>on rock, occasionally epiphytic. <b>Sporophytes</b> not known. <b>Gametophytes</b> entirely filamentous, much branched, persistent. <b>Gemmae</b> composed of short filaments of undifferentiated cells.</span><!--

-->{{Treatment/Body
|habitat=On noncalcareous rocks in deeply sheltered crevices and grottoes
|elevation=150–1800 m
|distribution=Ala.;Conn.;Ga.;Ill.;Ind.;Ky.;Md.;Mass.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;S.C.;Tenn.;Vt.;Va.;W.Va.
|discussion=<p>Throughout the eastern uplands of the United States, gametophytes of <i>Trichomanes intricatum</i> form feltlike populations covering up to a square meter or more of rock surface in climatically moderated rock shelters and narrow canyons. Sporophytes are not produced, and reproduction is by gemmae and by perennial gametophyte growth and branching.</p><!--
--><p>Filamentous gametophytes of the various <i>Trichomanes</i> species have not been distinguished morphologically. Enzyme electrophoresis, however, has shown the vast majority of independent <i>Trichomanes</i> gametophyte populations, as well as all of those existing beyond the range of sporophytes of <i>T. boschianum</i> and <i>T. petersii</i>, to be <i>T. intricatum</i>. (All populations of gametophytes tested in Arkansas and several populations in the immediate vicinity of sporophytes of <i>T. petersii</i> and <i>T. boschianum</i> in eastern states have enzyme banding patterns identical to one or the other of those species.) The adaptation of <i>T. intricatum</i> to far northern habitats and its inability to produce sporophytes suggest that this is a distinct taxon, possibly derived from a pre-Pleistocene North American species possessing a normal alternation of generations (D. R. Farrar 1985, 1992).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Trichomanes intricatum
|authority=Farrar
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Hymenophyllaceae
|habitat=On noncalcareous rocks in deeply sheltered crevices and grottoes
|elevation=150–1800 m
|distribution=Ala.;Conn.;Ga.;Ill.;Ind.;Ky.;Md.;Mass.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;S.C.;Tenn.;Vt.;Va.;W.Va.
|reference=None
|publication title=Amer. Fern J.
|publication year=1992
|special status=Illustrated;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V2/V2_159.xml
|genus=Trichomanes
|species=Trichomanes intricatum
}}<!--

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