View source for Ranunculus aquatilis var. diffusus

{{Treatment/ID
|accepted_name=Ranunculus aquatilis var. diffusus
|accepted_authority=Withering
|publications={{Treatment/Publication
|title=Arr. Brit. Pl. ed.
|place=3, 2: 507. 1796
|year=1796
}}
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Batrachium circinatum subsp. subrigidum
|authority=(W. B. Drew) A. Löve & D. Löve
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Batrachium flaccidum
|authority=(Persoon) Ruprecht
|rank=species
}} {{Treatment/ID/Synonym
|name=Batrachium longirostris
|authority=(Godron) F. W. Schultz
|rank=species
}} {{Treatment/ID/Synonym
|name=Batrachium trichophyllum
|authority=(Chaix) Bosch
|rank=species
}} {{Treatment/ID/Synonym
|name=Batrachium trichophyllum subsp. lutulentum
|authority=(Perrier & Songeon) Janchen ex V. V. Petrovsky
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Ranunculus aquatilis var. calvescens
|authority=(W. B. Drew) L. D. Benson
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus aquatilis var. capillaceus
|authority=(Thuillier) de Candolle
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus aquatilis var. eradicatus
|authority=Laestadius
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus aquatilis var. harrisii
|authority=L. D. Benson
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus aquatilis var. longirostris
|authority=(Godron) Lawson
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus aquatilis var. porteri
|authority=(Britton) L. D. Benson
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus aquatilis var. subrigidus
|authority=(W. B. Drew) Breitung
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus circinatus var. subrigidus
|authority=(W. B. Drew) L. D. Benson
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus confervoides
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Ranunculus longirostris
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Ranunculus subrigidus
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Ranunculus trichophyllus
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Ranunculus trichophyllus var. calvescens
|authority=W. B. Drew
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus trichophllus var. eradicatus
|authority=(Laestadius) W. B. Drew
|rank=variety
}} {{Treatment/ID/Synonym
|name=Ranunculus trichophyllus subsp. lutulentus
|authority=(Perrier & Songeon) Vierhapper
|rank=subspecies
}}
|hierarchy=Ranunculaceae;Ranunculus;Ranunculus subg. Batrachium;Ranunculus aquatilis;Ranunculus aquatilis var. diffusus
|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 class="higher-taxon"><small>variety</small>[[Ranunculus aquatilis var. diffusus]]</div></div>
|volume=Volume 3
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Leaves </b>all filiform-dissected. <b>Achenes</b> 1-1.8 × 0.8-1.2 mm; beak 0.2-1.2 mm. <b>2n</b> = 16, 32, 48.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–summer (Apr–Sep).
|habitat=Ponds, lakes, streams, ditches, edges of rivers
|elevation=0-3200 m
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);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;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.Mex.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico;Eurasia;Australia.
|discussion=<p>Populations of <i>Ranunculus aquatilis </i>var.<i> diffusus</i> with long achene beaks are not known from the Old World. In North America, beak length varies continuously over the whole range given for the variety, and separation of plants with unusually long beaks as R. longirostris is not tenable. <i>Ranunculus aquatilis </i>var.<i> diffusus</i> shows geographic variation, and some regional forms have been recognized as separate varieties. Dwarf creeping arctic plants may be called <i>R. aquatilis</i> var. eradicatum, plants with sparsely pubescent or glabrous receptacle from eastern North America may be called <i>R. aquatilis</i> <i></i>var.<i> calvescens</i>, plants with linear, noncapillary leaf segments from the northern Great Basin may be called <i>R. aquatilis</i> <i></i>var.<i> porteri</i>, and very robust plants from Oregon and northernmost California may be called <i>R. aquatilis</i> <i></i>var.<i> harrisii</i>. Extreme forms of these races are recognizable, but they intergrade and many specimens cannot be confidently assigned to one or another of them.</p><!--
--><p>The Eurasian species <i>Ranunculus</i> circinatus Sibthorp has been reported from North America. These reports are based on specimens of <i>R. aquatilis </i>var.<i> diffusus</i>.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Ranunculus aquatilis var. diffusus
|authority=Withering
|rank=variety
|parent rank=species
|synonyms=Batrachium circinatum subsp. subrigidum;Batrachium flaccidum;Batrachium longirostris;Batrachium trichophyllum;Batrachium trichophyllum subsp. lutulentum;Ranunculus aquatilis var. calvescens;Ranunculus aquatilis var. capillaceus;Ranunculus aquatilis var. eradicatus;Ranunculus aquatilis var. harrisii;Ranunculus aquatilis var. longirostris;Ranunculus aquatilis var. porteri;Ranunculus aquatilis var. subrigidus;Ranunculus circinatus var. subrigidus;Ranunculus confervoides;Ranunculus longirostris;Ranunculus subrigidus;Ranunculus trichophyllus;Ranunculus trichophyllus var. calvescens;Ranunculus trichophllus var. eradicatus;Ranunculus trichophyllus subsp. lutulentus
|basionyms=
|family=Ranunculaceae
|phenology=Flowering spring–summer (Apr–Sep).
|habitat=Ponds, lakes, streams, ditches, edges of rivers
|elevation=0-3200 m
|distribution=Greenland;Alta.;B.C.;Man.;N.B.;Nfld. and Labr. (Nfld.);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;Md.;Mass.;Mich.;Minn.;Mo.;Mont.;Nebr.;Nev.;N.H.;N.Mex.;N.J.;N.Y.;N.C.;N.Dak.;Ohio;Okla.;Oreg.;Pa.;R.I.;S.C.;S.Dak.;Tenn.;Tex.;Utah;Vt.;Va.;Wash.;W.Va.;Wis.;Wyo.;Mexico;Eurasia;Australia.
|reference=None
|publication title=Arr. Brit. Pl. ed.
|publication year=1796
|special status=Weedy
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_44.xml
|genus=Ranunculus
|subgenus=Ranunculus subg. Batrachium
|species=Ranunculus aquatilis
|variety=Ranunculus aquatilis var. diffusus
}}<!--

-->[[Category:Treatment]][[Category:Ranunculus aquatilis]]