View source for Stuckenia filiformis subsp. occidentalis

{{Treatment/ID
|accepted_name=Stuckenia filiformis subsp. occidentalis
|accepted_authority=(J. W. Robbins) R. R. Haynes
|publications={{Treatment/Publication
|title=Novon
|place=8: 241. 1998
|year=1998
}}
|common_names=Potamot filiforme occidental
|basionyms={{Treatment/ID/Synonym
|name=Potamogeton marinus var. occidentalis
|authority=J. W. Robbins
}}
|synonyms=
|hierarchy=Potamogetonaceae;Stuckenia;Stuckenia filiformis;Stuckenia filiformis subsp. occidentalis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Potamogetonaceae]]</div><div class="higher-taxon"><small>genus</small>[[Stuckenia]]</div><div class="higher-taxon"><small>species</small>[[Stuckenia filiformis]]</div><div class="higher-taxon"><small>subspecies</small>[[Stuckenia filiformis subsp. occidentalis]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>20–100 cm. <b>Leaves</b>: stipules disintegrating with age, those on proximal portion of stem inflated; blade inflated; 0.2–5 mm wide. <b>Inflorescences</b>: peduncles with flower and/or fruits adjacent or separated by less than 2 cm. <b>Fruits</b> often absent.</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–early fall.
|habitat=Calcareous waters, mainly in cold, slow- to fast-flowing streams and rivers, occasionally in standing waters of ponds and lakes
|elevation=0–2195 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Idaho;Iowa;Maine;Mich.;Minn.;Mont.;Nev.;N.H.;N.Mex.;N.Y.;N.Dak.;Oreg.;Utah;Vt.;Wash.;Wis.;Wyo.
|discussion=<p>In the Great Lakes region, the name <i>Potamogeton</i> [<i>Stuckenia</i>] vaginatus has often been misapplied to this taxon. The distribution of S. vaginatus is further to the north and west than the Great Lakes region, however. <i>Stuckenia filiformis</i> subsp. occidentaliis rarely produces fruit in the eastern portion of its range, while to the north and west it commonly fruits. This subspecies is very similar to <i>Potamogeton</i> rostratus Hagstr&ouml;m ([the combination does not exist within the genus <i>Stuckenia</i>)] of Asia and may prove to be the same taxon. Both grow in similar habitats. The proximal stipules are much enlarged and inflated, and the leaves are generally wider than the other subspecies.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Stuckenia filiformis subsp. occidentalis
|author=
|authority=(J. W. Robbins) R. R. Haynes
|rank=subspecies
|parent rank=species
|synonyms=
|basionyms=Potamogeton marinus var. occidentalis
|family=Potamogetonaceae
|phenology=Flowering spring–early fall.
|habitat=Calcareous waters, mainly in cold, slow- to fast-flowing streams and rivers, occasionally in standing waters of ponds and lakes
|elevation=0–2195 m
|distribution=Alta.;B.C.;Man.;N.B.;Nfld. and Labr.;N.W.T.;N.S.;Nunavut;Ont.;P.E.I.;Que.;Sask.;Yukon;Alaska;Colo.;Idaho;Iowa;Maine;Mich.;Minn.;Mont.;Nev.;N.H.;N.Mex.;N.Y.;N.Dak.;Oreg.;Utah;Vt.;Wash.;Wis.;Wyo.
|reference=None
|publication title=Novon
|publication year=1998
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V22/V22_273.xml
|genus=Stuckenia
|species=Stuckenia filiformis
|subspecies=Stuckenia filiformis subsp. occidentalis
}}<!--

-->[[Category:Treatment]][[Category:Stuckenia filiformis]]