View source for Ophioglossum vulgatum

{{Treatment/ID
|accepted_name=Ophioglossum vulgatum
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=2: 1062. 1753
|year=1753
}}
|common_names=Southern adder's-tongue;herbe sans couture
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Ophioglossum pycnostichum
|authority=(Fernald) A.Löve & D.Löve
}} {{Treatment/ID/Synonym
|name=Ophioglossum vulgatum var. pycnostichum
|authority=Fernald
}}
|hierarchy=Ophioglossaceae;Ophioglossum;Ophioglossum vulgatum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Ophioglossaceae]]</div><div class="higher-taxon"><small>genus</small>[[Ophioglossum]]</div><div class="higher-taxon"><small>species</small>[[Ophioglossum vulgatum]]</div></div>
|volume=Volume 2
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Roots </b>to 20 per plant, 0.3-0.9 mm diam., producing proliferations. <b>Stem</b> upright, to 1 cm, 3 mm diam., leaves 1 per stem. <b>Trophophore</b> stalk formed abruptly at base, to 5mm, sometimes more, 0.05 times length of trophophore blade. <b>Trophophore</b> blade erect to spreading, usually plane when alive, dark green, somewhat shiny, mostly ovate to ovate-trowel-shaped, widest in proximal half, to 10 × 4cm, firm, herbaceous, base tapering abruptly, apex rounded; venation complex-reticulate with included free veinlets in areoles. <b>Sporophores</b> arising at ground level, stalk 2-4 times length of trophophore; sporangial clusters 20-40 × 1-4 mm, with 10-35 pairs of sporangia, apiculum 1-1.5mm. <b>2n</b> =ca.1320.</span><!--

-->{{Treatment/Body
|phenology=Leaves appearing spring–early summer.
|habitat=Shaded secondary woods, rich wooded slopes, forested bottomlands, and floodplain woods, south of Wisconsin glaciation
|elevation=0-800m
|distribution=Ala.;Ariz.;Ark.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;La.;Mich.;Miss.;Mo.;N.J.;N.C.;Ohio;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.;W.Va.;Mexico;Eurasia.
|discussion=<p>In addition to characteristics given in the key, <i>Ophioglossum vulgatum</i> differs from <i>O. pusillum</i> in having an unusually persistent leathery basal leaf sheath (B.W. McAlpin 1971; W.H. Wagner Jr. 1971b) rather than an ephemeral one and in having smaller spores (mostly 35-45µm in <i>O. vulgatum</i> compared with 50-60 µm in <i>O. pusillum</i>). The chromosome number of <i>O. vulgatum</i> in India and Europe has been reported as 2n =480, and that may be the number of most North America populations, which are small spored. In the Appalachians, however, a distinctive large-spored form has a chromosome number of 2n =ca. 1320.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Ophioglossum vulgatum
|author=
|authority=Linnaeus
|rank=species
|parent rank=genus
|synonyms=Ophioglossum pycnostichum;Ophioglossum vulgatum var. pycnostichum
|basionyms=
|family=Ophioglossaceae
|phenology=Leaves appearing spring–early summer.
|habitat=Shaded secondary woods, rich wooded slopes, forested bottomlands, and floodplain woods, south of Wisconsin glaciation
|elevation=0-800m
|distribution=Ala.;Ariz.;Ark.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;La.;Mich.;Miss.;Mo.;N.J.;N.C.;Ohio;Okla.;Pa.;S.C.;Tenn.;Tex.;Va.;W.Va.;Mexico;Eurasia.
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V2/V2_106.xml
|genus=Ophioglossum
|species=Ophioglossum vulgatum
}}<!--

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