Crataegus sect. Macracanthae Loudon (Q4344)

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Crataegus sect. Macracanthae is a taxon with the rank section within the genus Crataegus
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English
Crataegus sect. Macracanthae Loudon
Crataegus sect. Macracanthae is a taxon with the rank section within the genus Crataegus

    Statements

    taxon/id/Crataegus sect. Macracanthae Loudon
    0 references
    Crataegus sect. Macracanthae Loudon
    Crataegus sect. Macracanthae
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    Crataegus sect. Macracanthae
    North America
    Shrubs or trees, 20–70 (–80) dm.
    Stems: trunks 1–several, ± erect to oblique, bark flattened-scaly;
    compound thorns on trunks present or absent;
    thorns on twigs determinate, recurved, usually stout, sometimes ± slender.
    Leaves: blade ± ovate or rhombic to rhombic-elliptic or broadly elliptic, 3–8 (–12) cm, coriaceous or thin, lobes 0 or 3–5 (–8) per side, sinuses shallow, max LII usually 20%, veins (3–) 5–8 per side, absent to sinuses.
    Inflorescences: branches usually pubescent;
    symmetric bracteoles present, basal bracteoles absent, falcate bracteoles absent.
    Flowers: post-mature petals pale paper brown;
    stamens 10 or 20, anthers red, pink, purple, sometimes white, ivory, or cream.
    Pomes orange to red;
    pyrenes dorsally grooved, sides ± pitted or eroded, sometimes plane.