Crataegus okennonii J. B. Phipps (Q4366)
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Crataegus okennonii is a taxon with the rank species within the series Crataegus ser. Douglasianae
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Crataegus okennonii J. B. Phipps
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Crataegus okennonii is a taxon with the rank species within the series Crataegus ser. Douglasianae
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Statements
taxon/id/Crataegus okennonii J.B. Phipps
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Crataegus okennonii J.B. Phipps
Crataegus okennonii
J.B. Phipps
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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CA-BC
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CA-BC
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US-ID
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US-MT
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US-WA
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300–700 m
300 meter
700 meter
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Shrubs or trees, 30–100 (–140) dm.
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1-year old twigs deep mahogany, shiny, older gray-brown;
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thorns on twigs single, slightly recurved, usually brown young, 2 cm.
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petiole 1–2 cm, pubescence and glandularity not recorded;
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blade elliptic to broadly elliptic, sometimes ± narrowly ovate or rhombic, 4–6 cm, lobes 2 or 3 per side, lobe apex acute to ± obtuse, margins serrate, venation craspedodromous, veins 4 per side, apex subacute to obtuse, abaxial surface glabrous except on veins, adaxial finely appressed-pubescent.
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Inflorescences 12–20-flowered;
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branches glabrous, sometimes ± sparsely pubescent;
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bracteole margins stipitate-glandular.
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Flowers 15–20 mm diam.;
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hypanthium glabrous;
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sepals broadly triangular, 3 mm, margins obscurely glandular;
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stamens 10–12, anthers pale-pink;
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Pomes red-burgundy to chestnut or reddish-brown (late Aug), deep purple to black at full maturity, ± ampulliform-orbicular, 8–10 mm diam., glabrous;
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sepal remnants reflexed, apex obtuse;
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pyrenes 3 or 4, sides ± eroded, sometimes plane.
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sometimes more or less narrowly
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pubescent
sometimes more or less sparsely
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red-burgundy
chestnut or reddish-brown deep purple
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red-burgundy
chestnut or reddish-brown deep purple
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ampulliform-orbicular
more or less
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