Rosa palustris

Marshall

Arbust. Amer., 135. 1785.

Common names: Swamp rose rosier palustre
EndemicIllustrated
Synonyms: Rosa floridana Rydberg R. gemella Willdenow R. lancifolia Small R. obtusiuscula Rydberg R. palustris var. dasistema (Rafinesque) E. J. Palmer & Steyermark
Treatment appears in FNA Volume 9. Treatment on page 99. Mentioned on page 95, 96, 100, 103.

Shrubs, forming thickets. Stems 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. Leaves 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 ovatelanceolate, 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. Inflorescences corymbs, (1 or) 2–10 (–40) -flowered. Pedicels 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. Flowers 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 ovatelanceolate, 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.). Hips 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. Achenes basal, 26, tan, 3 × 1.5–2 mm. 2n = 14.


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

V9 145-distribution-map.jpg

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., in Europe

Discussion

The single 1952 collection of Rosa palustris 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.

Rosa ×palustriformis (Rydberg) Voss (R. carolina var. aculeata Schuette, R. michiganensis Erlanson, R. schuetteana Erlanson) refers to putative hybrids between R. blanda × R. palustris from Maine, Michigan, Ohio, and Wisconsin. Rosa schuetteana is morphologically intermediate between the parental species; R. ×palustriformis is more similar to R. palustris. Rosa blanda and R. palustris differ by: branch armature (R. blanda unarmed or with sparse prickles or aciculi, R. palustris with stout, curved infrastipular prickles or unarmed); length of each auricle (R. blanda average 4.8 mm, R. palustris average 2.6 mm); petioles and rachises with pricklets (R. blanda rare, R. palustris common); leaflet serrations (R. blanda serrate, acute, teeth 10–26 per blade side, R. palustris serrulate, slightly blunt, teeth 20–30 per blade side); pedicels stipitate-glandular (R. blanda eglandular, R. palustris almost always); hypanthia stipitate-glandular (R. blanda eglandular, R. palustris almost always); inflorescences corymbs (R. blanda rare, R. palustris common).

Root decoctions of Rosa palustris were drunk by Cherokee to treat diarrhea (W. H. Lewis and M. P. F. Elvin-Lewis 2003). In Maine, R. palustris 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.).

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Rosa palustris"
stipitate-glandular +, glabrous +  and pubescent +
3 cm30 mm <br />0.03 m <br /> (?) +
1.5mm +  and 2mm +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Walter H. Lewis +, Barbara Ertter +  and Anne Bruneau +
Marshall +
reddish-brown +
exfoliating +
compound +  and simple +
opposite +  and alternate +
cuneate +
4 cm40 mm <br />0.04 m <br /> (6.3 cm63 mm <br />0.063 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2.3 cm23 mm <br />0.023 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
lustrous +  and dull +
elliptic +, lanceolate +  and ovatelanceolate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
10mm +  and 18mm +
persistent +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
lanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
free +  and distinct +
Swamp rose +  and rosier palustre +
1-16(-50)-flowered +
rarely puberulent +  and tomentose +
rarely puberulent +  and tomentose +
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. +  and in Europe +
not +  and aggregated +
0–700 m +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
not +  and aggregated +
eglandular +  and glandular +
urceolate +, pyriform +, oblong +, ellipsoid +, ovoid-obovoid +  and globose +
Swampy woods and pastures, marshes, edges of ponds, springs, lakes, backwaters, sloughs, streams, ditches +
stipitate +  and eglandular +
1.8 cm18 mm <br />0.018 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
stipitate-glandular +, or +  and glabrous +
elongate +, usually globose +  and subglobose +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
conic +  and flat +
setose-glandular +, stipitate +  and eglandular +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
purplish black +, purplish red +, orange-red +  and red +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glabrous +  and sparsely densely stipitate-glandular +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
leathery +  and fleshy +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
1-16(-50)-flowered +
crassinucellate +
3-foliate +  and compound +
11 cm110 mm <br />0.11 m <br /> (17 cm170 mm <br />0.17 m <br />) +
deciduous +
8 cm80 mm <br />0.08 m <br /> (11 cm110 mm <br />0.11 m <br />) +
leathery +  and membranous +
petiolulate +  and subsessile +
elliptic +  and obovate more or less oblong obovate-elliptic lanceolate-elliptic or obovate-oblong +
pinnate +, entire +, 1-2-serrulate +  and serrulate +
pubescent +  and stipitate-glandular +
pinnatifid +, entire +, undulate +, sinuate +  and serrulate +
distinct +
3×1 mm +  and 1-3 mm +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1-30(-50)-flowered +
setose-glandular +, sessile +, stipitate +  and eglandular +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
stipitate-glandular +  and glabrous +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
free +  and distinct +
1.4 cm14 mm <br />0.014 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
stipitate-glandular +, glabrous +, puberulent +  and pubescent +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering (Jun–)Jul(–Aug). +
adnate +, free +, connate +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
subulate +, deltate +, terete +  and hooked +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Arbust. Amer., +
stipitate-glandular +, glabrous +, puberulent +  and pubescent +
0.5 cm5 mm <br />0.005 m <br /> (?) +
not arillate +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
deciduous +
free +  and distinct +
spreading +, erect +  and reflexed +
lanceolate +  and narrowly ovatelanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
rarely densely puberulent +  and tomentose +
Endemic +  and Illustrated +
free +  and distinct +
flexuous +
procumbent +  and sprawling +
1 +  and 20 +
2.2 cm22 mm <br />0.022 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
persistent +
not elongate +
50 cm500 mm <br />0.5 m <br /> (100 cm1,000 mm <br />1 m <br />) +
pubescent +  and glabrous +
Rosa floridana +, R. gemella +, R. lancifolia +, R. obtusiuscula +  and R. palustris var. dasistema +
Rosa palustris +
Rosa sect. Rosa +
species +
2.5mm +  and 3.5mm +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
20 +  and 30 +
acute +  and more or less obtuse +
inconspicuous +
enlarged +  and small +
rhizomatous +  and open +
small +  and miniature +