View source for Rumex nematopodus

{{Treatment/ID
|accepted_name=Rumex nematopodus
|accepted_authority=Rechinger f.
|publications={{Treatment/Publication
|title=Leafl. W. Bot.
|place=7: 134. 1954
|year=1954
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Rumex aquaticus subsp. nematopodus
|authority=(Rechinger f.) Á. Löve
|rank=subspecies
}}
|hierarchy=Polygonaceae;Polygonaceae subfam. Polygonoideae;Rumex;Rumex subg. Rumex;Rumex sect. Rumex;Rumex nematopodus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Polygonaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Polygonaceae subfam. Polygonoideae]]</div><div class="higher-taxon"><small>genus</small>[[Rumex]]</div><div class="higher-taxon"><small>subgenus</small>[[Rumex subg. Rumex]]</div><div class="higher-taxon"><small>section</small>[[Rumex sect. Rumex]]</div><div class="higher-taxon"><small>species</small>[[Rumex nematopodus]]</div></div>
|volume=Volume 5
|mention_page=page 494, 518
|treatment_page=page 519
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism duration;whole_organism pubescence;whole_organism pubescence;whole_organism growth form;rootstock shape;rootstock orientation"><b>Plants </b>perennial, glabrous or nearly so, with fusiform, vertical rootstock.</span> <span class="statement" id="st-d0_s1" data-properties="stem orientation;stem architecture;stem atypical some measurement;stem some measurement"><b>Stems </b>erect, branched in distal 1/2, 40–85 (–100) cm.</span> <span class="statement" id="st-d0_s2" data-properties="ocreum duration;ocreum duration"><b>Leaves:</b> ocrea deciduous or partially persistent at maturity;</span> <span class="statement" id="st-d0_s3" data-properties="blade shape;blade length;blade width;base shape;margin architecture or shape;margin architecture or shape;margin prominence or shape;apex shape;apex shape">blade oblong-lanceolate to lanceolate, 20–35 × 5–12 cm, base cordate to broadly cuneate, margins entire or nearly so, flat, apex acute or attenuate.</span> <span class="statement" id="st-d0_s4" data-properties="inflorescence position or structure subtype;inflorescence architecture;inflorescence arrangement;inflorescence architecture;stem position or shape;stem quantity"><b>Inflorescences </b>terminal, occupying distal 1/2–2/3 of stem, interrupted in proximal 1/2, paniculate, branched.</span> <span class="statement" id="st-d0_s5" data-properties="pedicel architecture;pedicel shape;pedicel some measurement;pedicel length;articulation prominence;articulation shape"><b>Pedicels </b>articulated in proximal 1/3, filiform, 12–20 mm, 3–4 times as long as inner tepals, articulation weakly evident, not swollen.</span> <span class="statement" id="st-d0_s6" data-properties="flower quantity"><b>Flowers </b>10–20 in whorls;</span> <span class="statement" id="st-d0_s7" data-properties="inner tepal shape;inner tepal atypical length;inner tepal length;inner tepal atypical width;inner tepal width;base shape;margin architecture or shape;apex shape">inner tepals ovate-triangular, 4–5 (–6) × 3–4 (–5) mm, base truncate to subcordate, margins entire, apex acute to subacute;</span> <span class="statement" id="st-d0_s8" data-properties="tubercle presence">tubercles absent.</span> <span class="statement" id="st-d0_s9" data-properties="achene coloration;achene length;achene width;2n chromosome quantity"><b>Achenes </b>brown, 3 × 1.5 mm. <b>2n</b> = 120.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–early summer.
|habitat=Seasonally wet habitats along rivers and streams
|elevation=2500-3000 m
|distribution=Ariz.;N.Mex.;n Mexico (Chihuahua)
|discussion=<p>Rumex nematopodus has been reported from several localities in Arizona, New Mexico, and northern Mexico (K. H. Rechinger 1954). It is closely related to R. occidentalis, differing from that species in having longer pedicels and smaller inner tepals with acute apices. Those characters are highly variable in almost all species of the R. aquaticus aggregate, and the taxonomic status of R. nematopodus remains unclear.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Rumex nematopodus
|authority=Rechinger f.
|rank=species
|parent rank=section
|synonyms=Rumex aquaticus subsp. nematopodus
|basionyms=
|family=Polygonaceae
|phenology=Flowering spring–early summer.
|habitat=Seasonally wet habitats along rivers and streams
|elevation=2500-3000 m
|distribution=Ariz.;N.Mex.;n Mexico (Chihuahua)
|reference=None
|publication title=Leafl. W. Bot.
|publication year=1954
|special status=
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V5/V5_1065.xml
|subfamily=Polygonaceae subfam. Polygonoideae
|genus=Rumex
|subgenus=Rumex subg. Rumex
|section=Rumex sect. Rumex
|species=Rumex nematopodus
|2n chromosome quantity=120
|achene coloration=brown
|achene length=3
|achene width=1.5
|apex shape=acute;subacute
|articulation prominence=evident
|articulation shape=not swollen
|base shape=truncate;subcordate
|blade length=20cm;35cm
|blade shape=oblong-lanceolate;lanceolate
|blade width=5cm;12cm
|flower quantity=10;20
|inflorescence architecture=branched;interrupted
|inflorescence arrangement=paniculate
|inflorescence position or structure subtype=terminal
|inner tepal atypical length=5mm;6mm
|inner tepal atypical width=4mm;5mm
|inner tepal length=4mm;5mm
|inner tepal shape=ovate-triangular
|inner tepal width=3mm;4mm
|margin architecture or shape=entire;nearly;entire
|margin prominence or shape=flat
|ocreum duration=persistent;deciduous
|pedicel architecture=articulated
|pedicel length=3-4 times as long as inner tepals
|pedicel shape=filiform
|pedicel some measurement=12mm;20mm
|rootstock orientation=vertical
|rootstock shape=fusiform
|stem architecture=branched
|stem atypical some measurement=85cm;100cm
|stem orientation=erect
|stem position or shape=distal
|stem quantity=1/2;2/3
|stem some measurement=40cm;85cm
|tubercle presence=absent
|whole_organism duration=perennial
|whole_organism growth form=plant
|whole_organism pubescence=nearly;glabrous
}}<!--

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