View source for Adiantum capillus-veneris

{{Treatment/ID
|accepted_name=Adiantum capillus-veneris
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 1096. 1753
|year=1753
}}
|common_names=Venus's-hair fern;southern maidenhair
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Adiantum capillus-veneris var. modestum
|authority=(L. Underwood) Fernald
}} {{Treatment/ID/Synonym
|name=Adiantum capillus-veneris var. protrusum
|authority=Fernald
}} {{Treatment/ID/Synonym
|name=Adiantum capillus-veneris var. rimicola
|authority=(Slosson) Fernald
}}
|hierarchy=Pteridaceae;Adiantum;Adiantum capillus-veneris
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Pteridaceae]]</div><div class="higher-taxon"><small>genus</small>[[Adiantum]]</div><div class="higher-taxon"><small>species</small>[[Adiantum capillus-veneris]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>short-creeping; scales golden brown to medium brown, concolored, iridescent, margins entire or occasionally with single broad tooth near base. <b>Leaves</b> lax-arching or pendent, closely spaced, 15–75 cm. <b>Petiole</b> 0.5–1.5 mm diam., glabrous, occasionally glaucous. <b>Blade</b> lanceolate, pinnate, 10–45 × 4–15 cm, glabrous, gradually reduced distally; proximal pinnae 3(–4)-pinnate; rachis straight to flexuous, glabrous, not glaucous. <b>Segment</b> stalks 0.5–3.5 mm, dark color extending into segment base. <b>Ultimate</b> segments various, generally cuneate or fan-shaped to irregularly rhombic (plants in American southwest occasionally with segments nearly round), about as long as broad; base broadly to narrowly cuneate; margins shallowly to deeply lobed, incisions 0.5–7 mm, occasionally ± laciniate, sharply denticulate in sterile segments; apex rounded to acute. <b>Indusia</b> transversely oblong or crescent-shaped, 1–3(–7) mm, glabrous. <b>Spores</b> mostly 40–50 µm diam. <b>2n</b> = 120.</span><!--

-->{{Treatment/Body
|phenology=Sporulating spring–summer.
|habitat=Moist calcareous cliffs, banks, and ledges along streams and rivers, walls of lime sinks, canyon walls (in the American southwest), around foundations, on mortar of storm drains
|elevation=0–2500 m
|distribution=B.C.;Ala.;Ariz.;Ark.;Calif.;Colo.;Fla.;Ga.;Ky.;La.;Miss.;Mo.;Nev.;N.Mex.;N.C.;Okla.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.;Mexico;West Indies;Central America;South America in Venezuela;Peru;tropical to warm temperate regions in Eurasia and Africa.
|discussion=<p>No evident pattern to morphologic variation in the species is discernible, although a number of segregate species and infraspecific taxa have been recognized within North American <i>Adiantum capillus-veneris</i>. In the Eastern Hemisphere, the species is diploid, with 2n = 60 (I. Manton 1950). Several tetraploid counts have been reported from North America (W. H. Wagner Jr. 1963). Spore-measurement data suggest, however, that the polyploid cytotype may not be widely distributed. Further investigation is needed to determine whether <i>Adiantum capillus-veneris</i> populations in North America are conspecific with those in Eurasia and Africa.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Adiantum capillus-veneris
|author=
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Adiantum capillus-veneris var. modestum;Adiantum capillus-veneris var. protrusum;Adiantum capillus-veneris var. rimicola
|basionyms=
|family=Pteridaceae
|phenology=Sporulating spring–summer.
|habitat=Moist calcareous cliffs, banks, and ledges along streams and rivers, walls of lime sinks, canyon walls (in the American southwest), around foundations, on mortar of storm drains
|elevation=0–2500 m
|distribution=B.C.;Ala.;Ariz.;Ark.;Calif.;Colo.;Fla.;Ga.;Ky.;La.;Miss.;Mo.;Nev.;N.Mex.;N.C.;Okla.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.;Mexico;West Indies;Central America;South America in Venezuela;Peru;tropical to warm temperate regions in Eurasia and Africa.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V2/V2_208.xml
|genus=Adiantum
|species=Adiantum capillus-veneris
}}<!--

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