View source for Potamogeton oakesianus

{{Treatment/ID
|accepted_name=Potamogeton oakesianus
|accepted_authority=J. W. Robbins in A. Gray
|publications={{Treatment/Publication
|title=in A. Gray,Manual of Botany of the Northern United States (ed. 5)
|place=485. 1867
|year=1867
}}
|common_names=Oakes pondweed;potamot d’Oakes
|basionyms=
|synonyms=
|hierarchy=Potamogetonaceae;Potamogeton;Potamogeton oakesianus
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Potamogetonaceae]]</div><div class="higher-taxon"><small>genus</small>[[Potamogeton]]</div><div class="higher-taxon"><small>species</small>[[Potamogeton oakesianus]]</div></div>
|volume=Volume 22
|mention_page=
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Rhizomes </b>present. <b>Cauline</b> stems terete, with red spots, 7–75 cm; nodal glands absent. <b>Turions</b> absent. <b>Leaves</b> both submersed and floating, &#177; spirally arranged. <b>Submersed</b> leaves sessile, lax; stipules persistent, conspicuous, convolute, free from blade, whitish, not ligulate, 1–3 cm, delicately fibrous, not shredding at tip, apex obtuse; blade pale green, linear to phyllodial, not arcuate, 5–16 cm × (0.25–)0.3–1 mm, base slightly tapering, without basal lobes, not clasping, margins entire, not crispate, apex acute, not hoodlike, lacunae absent, setaceous; veins 3. <b>Floating</b> leaves: petioles continuous in color to apex, 3.2–7.5 cm; blade adaxially light to dark green, lanceolate to elliptic or ovate, (1.5–)2–4(–5.5) cm × 10–20(–30) mm, base rounded or tapering, apex acute; veins (7–)9–19(–23). <b>Inflorescences</b> unbranched, emersed; peduncles not dimorphic, terminal, ascending to spreading, cylindric, 2.5–8 cm; spikes not dimorphic, cylindric, 10–35 mm. <b>Fruits</b> sessile, greenish brown, obovoid, turgid, abaxially keeled, laterally keeled, 2.5–3.5(–3.7) × (1.6–)2–2.4 mm, lateral keels without points; beak erect, 0.4–0.8 mm; sides without basal tubercles; embryo with 1 full spiral. <b>Chromosome</b> number apparently unknown.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer–fall.
|habitat=Quiet acidic waters of bogs, ponds, and lakes
|elevation=50–1500 m
|distribution=St. Pierre and Miquelon;B.C.;N.B.;Nfld. and Labr.;N.S.;Ont.;Que.;Conn.;Maine;Mass.;Mich.;Minn.;Mont.;N.H.;N.J.;N.Y.;Pa.;R.I.;Vt.;Va.;W.Va.;Wis.
|discussion=<p><i>Potamogeton oakesianus</i>, along with <i>Potamogeton floridanus</i> and <i>P. natans</i>, has floating leaves and phyllodial submersed leaves. The petioles of this species and of <i>P. floridanus</i> lack a short area of light-colored tissue immediately proximal to the blade.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Potamogeton oakesianus
|author=
|authority=J. W. Robbins in A. Gray
|rank=species
|parent rank=genus
|synonyms=
|basionyms=
|family=Potamogetonaceae
|phenology=Flowering summer–fall.
|habitat=Quiet acidic waters of bogs, ponds, and lakes
|elevation=50–1500 m
|distribution=St. Pierre and Miquelon;B.C.;N.B.;Nfld. and Labr.;N.S.;Ont.;Que.;Conn.;Maine;Mass.;Mich.;Minn.;Mont.;N.H.;N.J.;N.Y.;Pa.;R.I.;Vt.;Va.;W.Va.;Wis.
|reference=None
|publication title=in A. Gray,Manual of Botany of the Northern United States (ed. 5)
|publication year=1867
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V22/V22_133.xml
|genus=Potamogeton
|species=Potamogeton oakesianus
}}<!--

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