Crataegus macracantha Loddiges ex Loudon (Q4348)

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Crataegus macracantha is a taxon with the rank species within the series Crataegus ser. Macracanthae
Language Label Description Also known as
English
Crataegus macracantha Loddiges ex Loudon
Crataegus macracantha is a taxon with the rank species within the series Crataegus ser. Macracanthae

    Statements

    taxon/id/Crataegus macracantha Loddiges ex Loudon
    0 references
    Crataegus macracantha Loddiges ex Loudon
    Crataegus macracantha
    Loddiges ex Loudon
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    Crataegus macracantha
    aubépine occidentale (French)
    aubépine à sépales entiers (French)
    long-spined hawthorn (English)
    large-thorned hawthorn (English)
    western long-thorned hawthorn (English)
    aubépine à épines longues (French)
    Large-thorn hawthorn (English)
    aubépine á épines longues (English)
    1 reference
    Newmaster, S.G. & S. Ragupathy. 2005. Flora Ontario - Integrated Botanical Information System (FOIBIS), Phase I. University of Guelph, Canada. http://www.uoguelph.ca/foibis http://www.uoguelph.ca/foibis/
    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.
    Flowering Apr–Jun; fruiting Sep–Oct.
    Shrubs, 40–60 (–80) dm.
    Stems: older trunks usually bearing compound thorns;
    thorns on twigs usually numerous, recurved, shiny, dark blackish brown, older gray, stout, 3–7 (–11) cm.
    Leaves: petiole 1–2 cm, narrowly winged distally, glabrous, eglandular, rarely glandular (on distal wing);
    blade narrowly rhombic-elliptic to broadly rhombic-ovate (sometimes narrowly obovate), 4–7 (–10) cm widest near middle, subcoriaceous mature (then often blue-green), base cuneate (constricted into winged distal part of petioles), lobes 3–5 per side, sinuses obscure to well-marked, LII 5–15%, lobe apex usually obtuse, margins serrate except near bases, veins 6–8 per side, impressed, apex acute to obtuse, abaxial surface glabrous (except in var. pertomentosa), adaxial scabrous-pubescent young.
    Inflorescences 15–30-flowered;
    branches pubescent or glabrous;
    bracteoles ± pallid, linear, margins glandular, sometimes long-stipitate-glandular.
    Flowers 13–19 mm diam.;
    hypanthium glabrous or sparsely to densely pubescent;
    sepals narrowly triangular, 4–6 mm, margins glandular-serrate to glandular-laciniate, abaxial pubescence not recorded, adaxially glabrous;
    stamens 10, anthers white or pink, 0.9–1.2 mm;
    Pomes: brilliant scarlet (west) to full crimson (east), suborbicular, 7–12 mm diam., succulent mature, glabrous or pubescent;
    sepals spreading-reflexed;
    pyrenes 2 or 3, sides pitted.