Crataegus formosa Sargent (Q4308)

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Crataegus formosa is a taxon with the rank species within the series Crataegus ser. Pruinosae
Language Label Description Also known as
English
Crataegus formosa Sargent
Crataegus formosa is a taxon with the rank species within the series Crataegus ser. Pruinosae

    Statements

    taxon/id/Crataegus formosa Sargent
    0 references
    Crataegus formosa Sargent
    Crataegus formosa
    Sargent
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    aubépine jolie (French)
    waxy-fruit hawthorn (English)
    beautiful hawthorn (English)
    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.
    Flowering May; fruiting Sep–Oct.
    Shrubs or trees, 50 dm.
    thorns on twigs recurved, 2-years old dark-brown, shiny, older charcoal black, then gray, ± slender, 2.5–5 cm.
    Leaves: petiole length 30–36% blade, eglandular or slightly glandular;
    blade deltate (mainly on shoots with terminal inflorescence) to broadly rhombic-elliptic, 4–7 cm, subcoriaceous, base cuneate to nearly truncate, lobes 3 or 4 per side (larger leaves), sinuses moderately deep, lobe apex acute, margins serrate, veins 5 or 6 per side, apex acute, surfaces glabrous.
    Inflorescences 4–7-flowered;
    branches glabrous;
    bracteoles caducous, absent or several, margins glandular.
    Flowers 22–30 mm diam.;
    sepals triangular, 6 mm, margins subentire, abaxially glabrous;
    stamens 20, anthers white, 0.6–0.8 mm;
    Pomes red, often ± angular, 10 mm diam., ± pruinose;
    sepals on collar, spreading;