View source for Rosa palustris

{{Treatment/ID
|accepted_name=Rosa palustris
|accepted_authority=Marshall
|publications={{Treatment/Publication
|title=Arbust. Amer.,
|place=135. 1785
|year=1785
}}
|common_names=Swamp rose;rosier palustre
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}{{Treatment/ID/Special_status
|code=F
|label=Selected by author to be illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Rosa floridana
|authority=Rydberg
}} {{Treatment/ID/Synonym
|name=R. gemella
|authority=Willdenow
}} {{Treatment/ID/Synonym
|name=R. lancifolia
|authority=Small
}} {{Treatment/ID/Synonym
|name=R. obtusiuscula
|authority=Rydberg
}} {{Treatment/ID/Synonym
|name=R. palustris var. dasistema
|authority=(Rafinesque) E. J. Palmer & Steyermark
}}
|hierarchy=Rosaceae;Rosaceae subfam. Rosoideae;Rosaceae tribe Roseae;Rosa;Rosa subg. Rosa;Rosa sect. Rosa;Rosa palustris
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Rosoideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Roseae]]</div><div class="higher-taxon"><small>genus</small>[[Rosa]]</div><div class="higher-taxon"><small>subgenus</small>[[Rosa subg. Rosa]]</div><div class="higher-taxon"><small>section</small>[[Rosa sect. Rosa]]</div><div class="higher-taxon"><small>species</small>[[Rosa palustris]]</div></div>
|volume=Volume 9
|mention_page=page 95, 96, 100, 103
|treatment_page=page 99
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> forming thickets. <b>Stems</b> erect, 10–25(–30) dm, sparsely branched; bark reddish brown, glabrous; infrastipular prickles paired, curved, rarely erect, stout, 3.5–8 × 2–5(–10) mm, base glabrous, internodal prickles and aciculi rare, sometimes absent. <b>Leaves</b> 8–11 cm; stipules narrow, 10–22(–35) × 2.5–4 mm, auricles erect, rarely flared, 2.5–4.5(–8) mm, margins serrulate, eglandular or stipitate-glandular, surfaces glabrous, eglandular; petiole and rachis usually with pricklets, puberulent to pubescent, sometimes glabrous, eglandular or sparsely stipitate-glandular; leaflets 5–7, terminal: petiolule 5–10 mm, blade ovate-lanceolate, rarely broadly lanceolate or narrowly elliptic, 23–45 × 10–18 mm, membranous, base cuneate, margins 1–2-serrulate, eglandular, teeth 20–30 per side, acute to ± obtuse, eglandular, apex acute to subacute, abaxial surfaces pale green, glabrous or pubescent, eglandular, adaxial green, dull, glabrous. <b>Inflorescences</b> corymbs, (1 or)2–10(–40)-flowered. <b>Pedicels</b> erect, slender, 6–15 mm, glabrous, densely stipitate-glandular; bracts 2, lanceolate, 6–15 × 3–4 mm, margins and central veins pubescent, eglandular, surfaces pubescent, eglandular. <b>Flowers</b> 2.5–5 cm diam.; hypanthium cupulate, 2–4 × 2–4 mm, glabrous, sparsely to densely stipitate-glandular, neck absent or 1–3 mm; sepals spreading to reflexed, rarely erect, lanceolate to narrowly ovate-lanceolate, 15–30(–40) × 2–3.5 mm, tip 2.5–3.5 × 0.5–1 mm, margins entire, rarely pinnate, abaxial surfaces glabrous, densely, sometimes sparsely, stipitate-glandular; petals single, pink to deep pink, 14–28 × 13–28 mm; stamens 200; carpels 24–50, styles exsert 0.5–1 m beyond stylar orifice (1.5 mm diam.) of hypanthial disc (3.5–4.5 mm diam.). <b>Hips</b> deep red, usually globose to subglobose, rarely elongate, 7–11 × 7–11 mm, fleshy, glabrous, sparsely or densely stipitate-glandular, neck absent or 3 × 1 mm; sepals deciduous, spreading. <b>Achenes</b> basal, 26, tan, 3 × 1.5–2 mm. <b>2n</b> = 14.</span><!--

-->{{Treatment/Body
|phenology=Flowering (Jun–)Jul(–Aug).
|habitat=Swampy woods and pastures, marshes, edges of ponds, springs, lakes, backwaters, sloughs, streams, ditches
|elevation=0–700 m
|distribution=N.B.;N.S.;Ont.;Que.;Ala.;Ark.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;Iowa;Ky.;Maine;Md.;Mass.;Mich.;Miss.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va.;Wis.;introduced in Europe.
|discussion=<p>The single 1952 collection of <i>Rosa palustris</i> from Lake of Three Fires State Park (ISC), Taylor County, southwestern Iowa, is about 430 km northwest of the nearest known collection of the species, in Missouri. The species was probably introduced. It has the most serrulate leaflet margins of all roses in North America; the stems usually have short, stout, curved infrastipular prickles, rarely without armature.</p><!--
--><p><i>Rosa</i> ×palustriformis (Rydberg) Voss (<i>R. carolina</i> <i></i>var.<i> aculeata</i> Schuette, R. michiganensis Erlanson, R. schuetteana Erlanson) refers to putative hybrids between <i>R. blanda</i> × <i>R. palustris</i> from Maine, Michigan, Ohio, and Wisconsin. <i>Rosa</i> schuetteana is morphologically intermediate between the parental species; R. ×palustriformis is more similar to <i>R. palustris</i>. <i>Rosa blanda</i> and <i>R. palustris</i> differ by: branch armature (<i>R. blanda</i> unarmed or with sparse prickles or aciculi, <i>R. palustris</i> with stout, curved infrastipular prickles or unarmed); length of each auricle (<i>R. blanda</i> average 4.8 mm, <i>R. palustris</i> average 2.6 mm); petioles and rachises with pricklets (<i>R. blanda</i> rare, <i>R. palustris</i> common); leaflet serrations (<i>R. blanda</i> serrate, acute, teeth 10–26 per blade side, <i>R. palustris</i> serrulate, slightly blunt, teeth 20–30 per blade side); pedicels stipitate-glandular (<i>R. blanda</i> eglandular, <i>R. palustris</i> almost always); hypanthia stipitate-glandular (<i>R. blanda</i> eglandular, <i>R. palustris</i> almost always); inflorescences corymbs (<i>R. blanda</i> rare, <i>R. palustris</i> common).</p><!--
--><p>Root decoctions of <i>Rosa palustris</i> were drunk by Cherokee to treat diarrhea (W. H. Lewis and M. P. F. Elvin-Lewis 2003). In Maine, <i>R. palustris</i> hips, including their achenes, are gathered about February, flattened, dried, and ground into flour for use with ground wheat to make leavened bread. The bread has a red color and a fine taste reminiscent of tomatoes (Arthur Haines, pers. comm.).</p>
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-->{{#Taxon:
name=Rosa palustris
|author=
|authority=Marshall
|rank=species
|parent rank=section
|synonyms=Rosa floridana;R. gemella;R. lancifolia;R. obtusiuscula;R. palustris var. dasistema
|basionyms=
|family=Rosaceae
|phenology=Flowering (Jun–)Jul(–Aug).
|habitat=Swampy woods and pastures, marshes, edges of ponds, springs, lakes, backwaters, sloughs, streams, ditches
|elevation=0–700 m
|distribution=N.B.;N.S.;Ont.;Que.;Ala.;Ark.;Conn.;Del.;D.C.;Fla.;Ga.;Ill.;Ind.;Iowa;Ky.;Maine;Md.;Mass.;Mich.;Miss.;Mo.;N.H.;N.J.;N.Y.;N.C.;Ohio;Pa.;R.I.;S.C.;Tenn.;Vt.;Va.;W.Va.;Wis.;introduced in Europe.
|reference=None
|publication title=Arbust. Amer.,
|publication year=1785
|special status=Endemic;Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V9/V9_145.xml
|subfamily=Rosaceae subfam. Rosoideae
|tribe=Rosaceae tribe Roseae
|genus=Rosa
|subgenus=Rosa subg. Rosa
|section=Rosa sect. Rosa
|species=Rosa palustris
}}<!--

-->[[Category:Treatment]][[Category:Rosa sect. Rosa]]