Rosa arkansana Porter in T. C. Porter and J. M. Coulter (Q4066)

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Rosa arkansana is a taxon with the rank species within the section Rosa sect. Rosa
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English
Rosa arkansana Porter in T. C. Porter and J. M. Coulter
Rosa arkansana is a taxon with the rank species within the section Rosa sect. Rosa

    Statements

    taxon/id/Rosa arkansana Porter
    0 references
    Rosa arkansana Porter
    Rosa arkansana
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    rosier des prairies (French)
    prairie rose (English)
    wild prairie rose (English)
    Arkansas rose (English)
    low wild rose (English)
    Prairie rose (English)
    1 reference
    Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
    1 reference
    Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.
    1 reference
    Harms, V.L. 2006. Annotated catalogue of Saskatchewan vascular plants. http://www.biodiversity.sk.ca/Docs/AnnotatedCatalogueSKVascPlants2006.pdf
    1 reference
    Newmaster, S.G., A. Lehela, M.J. Oldham, P.W.C. Uhlig & S. McMurray. 1998. Ontario Plant List. Ontario Forest Research Institute, Sault Ste. Marie, Ontario. Forest Information Paper No. 123. 550 pp.
    1 reference
    Brouillet, L. Proposition de nom français. (pers. comm.)
    Flowering May–Jul.
    rocky slopes
    dry hillsides
    prairies
    bluffs
    open woods
    grassy roadsides
    200–2100 m
    Shrubs, forming hedge clusters.
    Stems erect, slender or stout, 6–15 dm, openly branched;
    infrastipular prickles rarely present, internodal prickles densely mixed with aciculi to stem apices, erect, terete, 1–3 (–4) × 0.5–2 mm, base rarely extending to 3 mm, smallest often gland-tipped, aciculi rarely absent.
    Leaves 5–10 (–16) cm;
    stipules 18–24 × 4–7 mm, auricles flared, 2.5–4 (–7) mm, margins undulate, coarsely or shallowly glandular-serrate, surfaces glabrous or puberulent, eglandular;
    petiole and rachis sometimes with pricklets, sometimes with sparse aciculi, pubescent, sometimes glabrous, rarely stipitate-glandular;
    leaflets (5–) 7–9 (–11), terminal: petiolule 4–12 mm, blade obovate, sometimes elliptic, 15–40 × 8–20 mm, membranous, margins 1 (–2+) -serrate, teeth 8–16 per side, eglandular, rarely gland-tipped, apex acute, abaxial surfaces pale green, pubescent, sometimes glabrous, eglandular, adaxial green, ± glaucous, dull, sometimes pubescent (especially along midveins).
    Inflorescences corymbs, 1–6 (–16) -flowered.
    Pedicels erect, slender, 10–20 mm, glabrous, eglandular;
    bracts 1 or 2 (or 3), broadly lanceolate, 11–20 × 5–8 mm, margins entire, eglandular, surfaces glabrous, eglandular.
    Flowers 3.3–4 cm diam.;
    hypanthium globose, 5–6.5 × 4–5.5 mm, glabrous, eglandular, neck (0–) 0.5–1.5 × 2 mm;
    sepals spreading to erect, lanceolate, 11–20 (–30) × (1.5–) 3–4 mm, tip 3–7 × 0.5–1 mm, margins pinnatifid or entire, abaxial surfaces glabrous, stipitate-glandular or eglandular;
    petals single, rarely double, pink or rose, sometimes fading white, rarely white, 22–26 × 21–30 mm;
    carpels 26–43, styles exsert 1.5–2 mm beyond stylar orifice (1.5 mm diam.) of hypanthial disc (3 mm diam.).
    Hips dull orange-red, globose, subglobose, or oblong, 10–11 × 7.5–13 mm, fleshy, glabrous, eglandular, rarely stipitate-glandular, neck 0–2 mm;
    sepals persistent, erect at hip maturity.
    Achenes basiparietal, 12–15, dark buff, ellipsoid, 4.5–5 × 2.5 mm. 2n = 28.