View source for Ranunculus aquatilis

{{Treatment/ID
|accepted_name=Ranunculus aquatilis
|accepted_authority=Linnaeus
|publications={{Treatment/Publication
|title=Sp. Pl.
|place=1: 556. 1753
|year=1753
}}
|common_names=White water crowsfoot;renoncule aquatique
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Batrachium aquatile
|authority=(Linnaeus) Dumortier
|rank=species
}}
|hierarchy=Ranunculaceae;Ranunculus;Ranunculus subg. Batrachium;Ranunculus aquatilis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Ranunculaceae]]</div><div class="higher-taxon"><small>genus</small>[[Ranunculus]]</div><div class="higher-taxon"><small>subgenus</small>[[Ranunculus subg. Batrachium]]</div><div class="higher-taxon"><small>species</small>[[Ranunculus aquatilis]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>glabrous. <b>Leaves</b> laminate and filiform-dissected; laminate leaf blades reniform, 3-parted, 0.4-1.1 × 0.7-2.3 cm, segments obovate or fan-shaped, shallowly cleft, margins crenate; filiform-dissected leaves with stipules gradually tapering upward, connate for their whole length. <b>Flowers</b>: receptacle hispid, rarely glabrous; sepals spreading or reflexed, 2-4 × 1-2 mm, glabrous; petals 5, 4-7 × 1-5 mm; style 0.1-0.8 mm. <b>Fruiting</b> pedicels usually recurved. <b>Heads</b> of achenes hemispheric to ovoid, 2-4 × 2-5 mm; achenes 1-2 × 0.8-1.4 mm, glabrous or hispid; beak persistent, filiform, 0.1-1.2 mm.</span><!--

-->{{Treatment/Body
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Mass.;Md.;Mich.;Minn.;Mo.;Mont.;N.C.;N.Dak.;N.H.;N.J.;N.Mex.;N.Y.;Nebr.;Nev.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.;Vt.;W.Va.;Wash.;Wis.;Wyo.;Eurasia
|discussion=<p>Varieties 2 (2 in the flora).</p><!--
--><p><i>Ranunculus aquatilis</i> is very variable. In the past it has often been treated as three or four species and many varieties. These segregate taxa have been based on the size, petiolation and rigidity of the leaves (now known to be primarily under environmental control), petal size and curvature of the fruiting pedicel (both sometimes variable along single stem), and number of achenes per head and length of achene beak (which vary continuously and are not correlated with one another). Unless reliable characters can be found, only two of the taxa recognized in older floras can be maintained.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Leaves of 2 types: laminate and filiform-dissected; w North America.
|[[Ranunculus aquatilis var. aquatilis|Ranunculus aquatilis var. aquatilis]]
|-id=key-0-1
|1
|Leaves all filiform-dissected; widespread.
|[[Ranunculus aquatilis var. diffusus|Ranunculus aquatilis var. diffusus]]
|}
</div></div><!--

-->{{#Taxon:
name=Ranunculus aquatilis
|authority=Linnaeus
|rank=species
|parent rank=subgenus
|synonyms=Batrachium aquatile
|basionyms=
|family=Ranunculaceae
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;Del.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;Maine;Mass.;Md.;Mich.;Minn.;Mo.;Mont.;N.C.;N.Dak.;N.H.;N.J.;N.Mex.;N.Y.;Nebr.;Nev.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Va.;Vt.;W.Va.;Wash.;Wis.;Wyo.;Eurasia
|reference=None
|publication title=Sp. Pl.
|publication year=1753
|special status=Illustrated
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_766.xml
|genus=Ranunculus
|subgenus=Ranunculus subg. Batrachium
|species=Ranunculus aquatilis
}}<!--

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[[Category:Treatment]]
[[Category:Ranunculus subg. Batrachium]]
[[Category:Revised Since Print]]