Potentilla plattensis Nuttall in J. Torrey and A. Gray (Q4026)

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Potentilla plattensis is a taxon with the rank species within the section Potentilla sect. Multijugae
Language Label Description Also known as
English
Potentilla plattensis Nuttall in J. Torrey and A. Gray
Potentilla plattensis is a taxon with the rank species within the section Potentilla sect. Multijugae

    Statements

    taxon/id/Potentilla plattensis Nuttall
    0 references
    Potentilla plattensis Nuttall
    Potentilla plattensis
    Nuttall
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    Potentilla plattensis
    potentille de la rivière Platte (French)
    Platte River cinquefoil (English)
    low cinquefoil (English)
    Platte cinquefoil (English)
    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
    Flowering summer.
    moist meadows
    streamsides
    reservoir margins
    Plants rosetted to tufted;
    taproots fleshy-thickened.
    Stems initially decumbent to sometimes ascending, becoming prostrate or supported by vegetation, (0.3–) 0.5–3.5 (–4.5) dm, lengths 1.5–2.5 (–4) times basal leaves.
    Basal leaves pinnate with distal leaflets ± distinct, 2–15 (–20) × 1–3 cm;
    petiole 0.5–5 cm, straight hairs common, tightly appressed, 0.5 (–1) mm, stiff, cottony hairs absent, glands absent or sparse;
    primary lateral leaflets (3–) 4–6 (–8) per side, on distal (1/4–) 1/2–3/4 of leaf axis, overlapping to separate, largest ones obovate, 0.5–1.5 (–2) × 0.5–1 (–1.3) cm, distal (1/2–) 2/3 to whole margin pinnately incised 3/4+ to midvein, ultimate teeth 5–10, linear-oblanceolate, 1.5–8 (–10) × 1–2 mm, apical tufts less than 0.5 mm, surfaces green to grayish green, not glaucous, straight hairs sparse to common (sparser adaxially), tightly appressed, 0.5 mm, stiff, cottony hairs absent, glands absent or inconspicuous.
    Cauline leaves 1–3.
    Inflorescences (1–) 3–15 (–20) -flowered, loosely cymose, sometimes racemiform.
    Pedicels 1–4 (–5) cm, ± recurved in fruit.
    Flowers: epicalyx bractlets narrowly elliptic to linear-lanceolate, 2–5 (–6) × 0.5–2 mm;
    hypanthium 3–4 mm diam.;
    sepals 3–6 mm, apex acute;
    petals 4–7 × 3–6 mm;
    filaments 1–2.5 mm, anthers 0.5–1 mm, usually ± 1/2 as long as filaments;
    carpels 10–20, styles 1.5–2.5 mm.