View source for Rorippa palustris

{{Treatment/ID
|accepted_name=Rorippa palustris
|accepted_authority=(Linnaeus) Besser
|publications={{Treatment/Publication
|title=Enum. Pl.,
|place=27. 1821
|year=1821
}}
|special_status={{Treatment/ID/Special_status
|code=W
|label=Weedy
}}
|basionyms={{Treatment/ID/Basionym
|name=Sisymbrium amphibium var. palustre
|authority=Linnaeus
|rank=variety
|publication_title=Sp. Pl.
|publication_place=2: 657. 1753
}}
|synonyms={{Treatment/ID/Synonym
|name=Brachiolobos palustris
|authority=(Linnaeus) Clairville
|rank=species
}} {{Treatment/ID/Synonym
|name=Cardamine palustris
|authority=(Linnaeus) Kuntze
|rank=species
}} {{Treatment/ID/Synonym
|name=Caroli-gmelina palustris
|authority=(Linnaeus) P. Gaertner, B. Meyer & Scherbius
|rank=species
}} {{Treatment/ID/Synonym
|name=Myagrum palustre
|authority=(Linnaeus) Lamarck
|rank=species
}} {{Treatment/ID/Synonym
|name=Nasturtium palustre
|authority=(Linnaeus) de Candolle
|rank=species
}} {{Treatment/ID/Synonym
|name=Radicula palustris
|authority=(Linnaeus) Moench
|rank=species
}}
|hierarchy=Brassicaceae;Brassicaceae tribe Cardamineae;Rorippa;Rorippa palustris
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Brassicaceae]]</div><div class="higher-taxon"><small>tribe</small>[[Brassicaceae tribe Cardamineae]]</div><div class="higher-taxon"><small>genus</small>[[Rorippa]]</div><div class="higher-taxon"><small>species</small>[[Rorippa palustris]]</div></div>
|volume=Volume 7
|mention_page=page 494, 495, 496, 498, 502
|treatment_page=page 501
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Annuals </b>or, rarely, perennials; (short-lived, terrestrial or of wet habitat, not submerged); usually glabrous, rarely hirsute, (trichomes cylindrical). <b>Stems</b> (often simple from base), erect, branched distally, (0.5–)1–10(–14) dm, (sometimes hirsute proximally). <b>Basal</b> leaves rosulate; blade [(4–)6–20(–30) cm × 10–50(–80) mm] margins lyrate-pinnatisect, (abaxial surface sometimes hirsute). <b>Cauline</b> leaves petiolate or subsessile; blade lyrate-pinnatisect, (lateral lobes oblong or ovate when present), (1.5–)2.5–10(–18) cm × (5–)8–25(–30) mm, (lateral lobes smaller than terminal), base auriculate or amplexicaul, margins subentire or irregularly dentate, sinuate, serrate, or crenate, (abaxial surface sometimes hirsute). <b>Racemes</b> often considerably elongated. <b>Fruiting</b> pedicels divaricate or slightly to strongly reflexed, straight or curved, (2.5–)3–10(–14) mm. <b>Flowers</b>: sepals erect, oblong, 1.5–2.4(–2.6) × 0.5–1 mm; petals yellow or pale yellow, spatulate, (1.5–)1.8–2.5(–3) × 0.5–1.5(–2) mm; median filaments 1–2.5 mm; anthers ovate, 0.3–0.5 mm. <b>Fruits</b> usually silicles, rarely siliques, often slightly curved, oblong, ellipsoid, or oblong-ovoid, (2.5–)4–10 × (1.5–)1.7–3(–3.5) mm; ovules 20–90 per ovary; style 0.2–1(–1.2) mm. <b>Seeds</b> biseriate, brown to yellowish brown, ovoid or subglobose, 0.5–0.7(–0.9) mm (0.4–0.6(–0.7) mm diam.), colliculate.</span><!--

-->{{Treatment/Body
|distribution=Alta.;B.C.;Man.;N.B.;N.S.;N.W.T.;Ont.;P.E.I.;Que.;Sask.;Yukon;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;D.C.;Del.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Mass.;Md.;Mich.;Minn.;Miss.;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.;Europe;Asia;introduced in n Mexico;South America;Australia.
|discussion=<p>Subspecies 2 (2 in the flora).</p><!--
--><p><i>Rorippa palustris</i> is a highly variable species with controversial infraspecific taxonomy. B. Jonsell (1968) recognized four subspecies, of which one (<i></i>subsp.<i> palustris</i>) is cosmopolitan and three are North American. R. L. Stuckey (1972) followed Jonsell but further divided the North American plants into eleven, poorly defined varieties. Division of the species into subspecies based solely on stem height and fruit length is artificial. The variation is continuous in every character, and the recognized infraspecific taxa represent only some of the extremes. Some collections cannot be adequately assigned to a given subspecies or variety, and of all the infraspecific taxa recognized, only two can be consistently separated from each other; they are recognized here as subspecies.</p>
|tables=
|references=
}}<!--

--><div class="treatment-key">
==Key==
<div class="treatment-key-group">
  
{| class="wikitable fna-keytable"
|-id=key-0-1
|1
|Stems and abaxial leaf blade surfaces usually glabrous, rarely sparsely pubescent proximally.
|[[Rorippa palustris subsp. palustris|Rorippa palustris subsp. palustris]]
|-id=key-0-1
|1
|Stems and abaxial leaf blades surfaces often densely hirsute.
|[[Rorippa palustris subsp. hispida|Rorippa palustris subsp. hispida]]
|}
</div></div><!--

-->{{#Taxon:
name=Rorippa palustris
|authority=(Linnaeus) Besser
|rank=species
|parent rank=genus
|synonyms=Brachiolobos palustris;Cardamine palustris;Caroli-gmelina palustris;Myagrum palustre;Nasturtium palustre;Radicula palustris
|basionyms=Sisymbrium amphibium var. palustre
|family=Brassicaceae
|distribution=Alta.;B.C.;Man.;N.B.;N.S.;N.W.T.;Ont.;P.E.I.;Que.;Sask.;Yukon;Ala.;Alaska;Ariz.;Ark.;Calif.;Colo.;Conn.;D.C.;Del.;Fla.;Ga.;Idaho;Ill.;Ind.;Iowa;Kans.;Ky.;La.;Maine;Mass.;Md.;Mich.;Minn.;Miss.;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.;Europe;Asia;introduced in n Mexico;South America;Australia.
|reference=None
|publication title=Enum. Pl.,
|publication year=1821
|special status=Weedy
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_781.xml
|tribe=Brassicaceae tribe Cardamineae
|genus=Rorippa
|species=Rorippa palustris
}}<!--

-->[[Category:Treatment]][[Category:Rorippa]]