View source for Hypericum adpressum

{{Treatment/ID
|accepted_name=Hypericum adpressum
|accepted_authority=W. P. C. Barton
|publications={{Treatment/Publication
|title=Comp. Fl. Philadelph.
|place=2: 15. 1818
|year=1818
}}
|common_names=Creeping St. John’s wort
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Brathydium fastigiatum
|authority=(Elliott) K. Koch
|rank=species
}} {{Treatment/ID/Synonym
|name=Hypericum adpressum var. fastigiatum
|authority=(Elliott) Torrey & A. Gray
|rank=variety
}} {{Treatment/ID/Synonym
|name=H. adpressum var. spongiosum
|authority=B. L. Robinson
|rank=variety
}} {{Treatment/ID/Synonym
|name=H. bonaparteae
|authority=(W. P. C. Barton) K. Koch
|rank=species
}} {{Treatment/ID/Synonym
|name=H. fastigiatum
|authority=
|rank=species
}} {{Treatment/ID/Synonym
|name=Myriandra adpressa
|authority=
|rank=species
}}
|hierarchy=Hypericaceae;Hypericum;Hypericum sect. Myriandra;Hypericum adpressum
|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 adpressum]]</div></div>
|volume=Volume 6
|mention_page=page 75, 84
|treatment_page=page 83
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Inflorescences </b>rounded-corymbiform, 13–60-flowered, narrowly branched, without subsidiary branches. <b>Flowers</b> 10–15 mm diam.; sepals persistent, not enclosing capsule, 5, ovate-lanceolate to lanceolate, subequal, (2–)4–7 × 1–1.5 mm; petals 5, bright yellow, obovate-oblanceolate, 6–8 mm; stamens persistent, 60–80; ovary 3-merous, placentation parietal. <b>Capsules</b> ellipsoid to ovoid-ellipsoid, 3.5–6 × 2–4 mm. <b>Seeds</b> slightly carinate, 0.6–0.7 mm; testa scalariform. <b>2n</b> = 18.</span><!--

-->{{Treatment/Body
|phenology=Flowering late summer (Jul–Sep).
|habitat=Marshes, pond margins, wet ditches, bogs, coastal plain
|elevation=0–1000 m
|distribution=Conn.;Del.;Ga.;Ill.;Ind.;Md.;Mass.;Mo.;N.J.;N.Y.;N.C.;Pa.;R.I.;S.C.;Tenn.;Va.;W.Va.
|discussion=<p><i>Hypericum adpressum</i> is more herbaceous and rhizomatous than <i>H. sphaerocarpum</i> and has narrower capsules and smaller seeds.</p><!--
--><p>The plants with aerenchymatous tissue in the rhizome (var. spongiosum) are not taxonomically distinct but merely the result of a habitat-induced modification.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Hypericum adpressum
|authority=W. P. C. Barton
|rank=species
|parent rank=section
|synonyms=Brathydium fastigiatum;Hypericum adpressum var. fastigiatum;H. adpressum var. spongiosum;H. bonaparteae;H. fastigiatum;Myriandra adpressa
|basionyms=
|family=Hypericaceae
|phenology=Flowering late summer (Jul–Sep).
|habitat=Marshes, pond margins, wet ditches, bogs, coastal plain
|elevation=0–1000 m
|distribution=Conn.;Del.;Ga.;Ill.;Ind.;Md.;Mass.;Mo.;N.J.;N.Y.;N.C.;Pa.;R.I.;S.C.;Tenn.;Va.;W.Va.
|reference=None
|publication title=Comp. Fl. Philadelph.
|publication year=1818
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V6/V6_136.xml
|genus=Hypericum
|section=Hypericum sect. Myriandra
|species=Hypericum adpressum
}}<!--

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