Crataegus pennsylvanica Ashe (Q4290)
Crataegus pennsylvanica is a taxon with the rank species within the series Crataegus ser. Molles
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| English |
Crataegus pennsylvanica Ashe
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Crataegus pennsylvanica is a taxon with the rank species within the series Crataegus ser. Molles
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Statements
taxon/id/Crataegus pennsylvanica Ashe
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Crataegus pennsylvanica Ashe
Crataegus pennsylvanica
Ashe
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-ON
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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/
CA-ON
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US-DE
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US-NY
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US-NC
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US-OH
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US-PA
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10–200 m
10 meter
200 meter
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Shrubs or trees, 70–80 dm.
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Stems: trunk bark newly exposed orangebrown, older buff, fibrous, checked into longitudinal plates;
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thorns on twigs absent or few, usually recurved, 2-years old shiny dark-brown to blackish, stout to more slender, 3–5 cm.
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Leaves: stipules axillary, circinate, herbaceous, gland-bordered;
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petiole relatively slender, stouter than C. coccinea, length 30–35% blade, densely pubescent young, sparsely mature, often sparsely stipitate-glandular;
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blade broadly ovate to ovate-deltate, 6–10 cm, slightly coriaceous, base broadly cuneate to truncate, lobes 4–6 per side, sinuses shallow, lobe apex acute to obscure, margins sharply serrate, teeth at base often stipitate-glandular, veins 5–7 per side, apex acute, abaxial surface sparsely scabrous-pubescent young, glabrescent, veins hairy mature, adaxial densely appressed-scabrous young.
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Inflorescences 8–20-flowered;
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branches tomentose;
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bracteoles variably persistent, linear-lanceolate, membranous to (larger) ± herbaceous, margins glandular.
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Flowers 17–21 mm diam.;
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hypanthium densely tomentose;
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sepals narrowly triangular, 7–8 mm, margins glandular-laciniate, abaxially glabrate;
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stamens 5 or 6, or 10, anthers cream to pale-pink or salmon;
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Pomes bright red, suborbicular, 10–12 mm diam., densely villous;
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sepals prominent, erect-patent;
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stipitate-glandular
often sparsely
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membranous
more or less herbaceous
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