Potentilla pensylvanica Linnaeus (Q3973)

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Potentilla pensylvanica is a taxon with the rank species within the section Potentilla sect. Pensylvanicae
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English
Potentilla pensylvanica Linnaeus
Potentilla pensylvanica is a taxon with the rank species within the section Potentilla sect. Pensylvanicae

    Statements

    taxon/id/Potentilla pensylvanica Linnaeus
    0 references
    Potentilla pensylvanica Linnaeus
    Potentilla pensylvanica
    Linnaeus
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    Potentilla pensylvanica
    potentille de Pennsylvanie (French)
    Pennsylvania cinquefoil (English)
    prairie cinquefoil (English)
    Prairie cinquefoil (English)
    potentille de Pennsylvanie (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
    Marie-Victorin, Fr. 1995. Flore laurentienne. 3e éd. Mise à jour et annotée par L. Brouillet, S.G. Hay, I. Goulet, M. Blondeau, J. Cayouette et J. Labrecque. Gaétan Morin éditeur. 1093 pp.
    1 reference
    Cody, W.J. 2000. Flora of the Yukon Territory. 2nd ed. National Research Press, Ottawa. 669 pp.
    1 reference
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York. http://www.efloras.org/volume_page.aspx?volume_id=1009&flora_id=1
    Mexico (Tamaulipas)
    Eurasia
    Flowering summer.
    open prairies
    steppe bluffs
    shallow gravelly soil
    rocky ridges
    outcrops
    dry stream channels
    similar disturbed sites
    100–4000 m
    Stems ascending to erect, (0.3–) 1–4 (–6) dm.
    Basal leaves pinnate, (2–) 4–20 (–25) cm;
    petiole 1–8 cm, long hairs sparse to abundant, rarely absent, spreading to ascending, 0.5–3 mm, weak to ± stiff, short hairs abundant to dense, rarely absent, cottony or crisped hairs absent, glands sparse to abundant, often obscured;
    leaflets (2–) 3–5 (–7) per side, on distal 1/2–3/5 of leaf axis, separate to scarcely overlapping, terminal ones narrowly to broadly oblanceolate, (1–) 1.5–5 (–6) × 0.5–1.5 (–2) cm, margins strongly revolute, incised ± 3/4 to midvein, sometimes more or only ± 1/2, undivided medial blade 2–4 (–8) mm wide, teeth 4–8 (–10) per side, triangular-ovate to linear-elliptic, surfaces usually ± dissimilar, abaxial ± grayish to nearly white, rarely green, long hairs sparse to abundant (mostly on veins), rarely absent, 0.5–1.5 mm, ± weak, short hairs usually abundant to dense, rarely absent, crisped and cottony hairs absent, glands ± abundant, sometimes obscured, adaxial green to gray-green, long hairs sparse to abundant, rarely absent, spreading to ascending, ± 1 mm, short hairs ± abundant, sometimes obscured, rarely absent, cottony and crisped hairs absent, glands ± abundant.
    Cauline leaves 1–4.
    Inflorescences (1–) 3–40-flowered, congested or elongating in fruit.
    Pedicels 0.2–1 cm (proximal to 3.5 cm).
    Flowers: epicalyx bractlets usually ± lanceolate-elliptic, rarely ± ovate-elliptic, 3–6 (–8) × (1–) 1.5–2 (–2.5) mm, lengths ± equal to sepals, margins ± revolute;
    hypanthium 3–6 mm diam.;
    sepals (3–) 4–6 (–8) mm, apex acute to obtuse, abaxial surfaces: venation indistinct, glands abundant, ± evident;
    petals pale to bright-yellow, (3–) 4–7 × (3–) 4–7 mm, lengths ± equal to sepals;
    filaments (0.5–) 1–2 mm, anthers 0.5–0.8 (–1) mm;
    carpels 50–100, styles papillate-swollen in proximal ± 1/2, ± 1 mm.