View source for Hypericum ellipticum

{{Treatment/ID
|accepted_name=Hypericum ellipticum
|accepted_authority=Hooker
|publications={{Treatment/Publication
|title=Fl. Bor.-Amer.
|place=1: 110. 1831
|year=1831
}}
|common_names=Pale St. John’s wort;millepertuis elliptique
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Brathydium canadense
|authority=Spach
}} {{Treatment/ID/Synonym
|name=Hypericum brathydium
|authority=Steudel
}} {{Treatment/ID/Synonym
|name=H. canadense var. oviforme
|authority=R. Keller
}}
|hierarchy=Hypericaceae;Hypericum;Hypericum sect. Myriandra;Hypericum ellipticum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Hypericaceae]]</div><div class="higher-taxon"><small>genus</small>[[Hypericum]]</div><div class="higher-taxon"><small>section</small>[[Hypericum sect. Myriandra]]</div><div class="higher-taxon"><small>species</small>[[Hypericum ellipticum]]</div></div>
|volume=Volume 6
|mention_page=page 75
|treatment_page=page 84
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, erect, with creeping, rhizomatous, ± woody base, usually unbranched, sometimes branched proximally, relatively slender, 1.1–3(–5) dm. <b>Stems</b>: internodes 4-lined. <b>Leaf</b> blades broadly to narrowly elliptic or oblanceolate to oblong-elliptic, 11–35 × 3–13 mm, base not articulated, cuneate to shallowly cordate-amplexicaul, margins plane to subrevolute, apex rounded, midrib with 5–7 pairs of branches. <b>Inflorescences</b> corymbiform, (1–)3–15-flowered, narrowly branched, sometimes with branches from 1–2 proximal nodes. <b>Flowers</b> 12–15 mm diam.; sepals persistent, not enclosing capsule, (4–)5, ± lanceolate to lanceolate-elliptic, ± unequal, 6–7 × 2–3 mm; petals (4–)5, pale yellow, sometimes tinged red, obovate to oblanceolate, 6–8 mm; stamens persistent, 70–95; ovary 3-merous, placentation parietal. <b>Capsules</b> ellipsoid to globose, 4–7 × 3.5–5 mm. <b>Seeds</b> carinate, 0.6–0.7 mm; testa scalariform-reticulate. <b>2n</b> = 16, 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering summer (Jun–Sep).
|habitat=Stream, lake, and pond margins, wet meadows, swamps
|elevation=0–600 m
|distribution=N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Conn.;Ill.;Maine;Md.;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;Ohio.;Pa.;R.I.;Tenn.;Vt.;Wash.;W.Va.;Wis.
|discussion=<p><i>Hypericum ellipticum</i> is related to <i>H. sphaerocarpum</i>, differing by the shorter, herbaceous, rhizomatous habit, shorter leaves, and smaller seeds. A submerged aquatic form (forma submersum Fassett) and one with axillary branches developing after fertilization (forma foliosum Marie-Victorin) seem scarcely worth formal recognition. <i>Hypericum ellipticum</i> is introduced in Washington.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Hypericum ellipticum
|author=
|authority=Hooker
|rank=species
|parent rank=section
|synonyms=Brathydium canadense;Hypericum brathydium;H. canadense var. oviforme
|basionyms=
|family=Hypericaceae
|phenology=Flowering summer (Jun–Sep).
|habitat=Stream, lake, and pond margins, wet meadows, swamps
|elevation=0–600 m
|distribution=N.B.;Nfld. and Labr. (Nfld.);N.S.;Ont.;Que.;Conn.;Ill.;Maine;Md.;Mass.;Mich.;Minn.;N.H.;N.J.;N.Y.;Ohio.;Pa.;R.I.;Tenn.;Vt.;Wash.;W.Va.;Wis.
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1831
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V6/V6_137.xml
|genus=Hypericum
|section=Hypericum sect. Myriandra
|species=Hypericum ellipticum
}}<!--

-->[[Category:Treatment]][[Category:Hypericum sect. Myriandra]]