Crataegus sect. Macracanthae Loudon (Q4344)
Crataegus sect. Macracanthae is a taxon with the rank section within the genus Crataegus
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English |
Crataegus sect. Macracanthae Loudon
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Crataegus sect. Macracanthae is a taxon with the rank section within the genus Crataegus
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Statements
taxon/id/Crataegus sect. Macracanthae Loudon
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Crataegus sect. Macracanthae Loudon
Crataegus sect. Macracanthae
Loudon
FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
accepted
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Shrubs or trees, 20–70 (–80) dm.
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Stems: trunks 1–several, ± erect to oblique, bark flattened-scaly;
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compound thorns on trunks present or absent;
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thorns on twigs determinate, recurved, usually stout, sometimes ± slender.
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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.
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Inflorescences: branches usually pubescent;
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symmetric bracteoles present, basal bracteoles absent, falcate bracteoles absent.
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Flowers: post-mature petals pale paper brown;
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stamens 10 or 20, anthers red, pink, purple, sometimes white, ivory, or cream.
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Pomes orange to red;
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pyrenes dorsally grooved, sides ± pitted or eroded, sometimes plane.
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slender
sometimes more or less
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less ovate or rhombic-elliptic
rhombic-elliptic
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