Pear Hawthorn

Crataegus calpodendron (Ehrh.) Medik.

Royal Ontario Museum. Deb Metsger. Year: 2014. No known copyright restrictions

Crataegus calpodendron (Pear Hawthorn) is a species of tree in the family Rosaceae. They are native to Canada and The Contiguous United States.

URI: http://purl.obolibrary.org/obo/FLOPO_0900033
Definition: whole plant arborescent

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URI: http://www.geonames.org/6251999

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URI: http://www.wikidata.org/entity/Q578170

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EOL has data for 9 attributes, including:

geographic distribution includes
- URI: http://eol.org/schema/terms/Present
- Definition: This organism is known to be present in this location or region. Not exclusive; other regions may also be reported.
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Virginia
- URI: http://www.geonames.org/6254928
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habitat
- URI: http://purl.obolibrary.org/obo/RO_0002303
- Definition: x has habitat y if: x is an organism, y is a habitat, and y can sustain and allow the growth of a population of x
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waterfall
- URI: http://purl.obolibrary.org/obo/ENVO_00000040
- Definition: A sudden descent of water over a step or ledge in the bed of a river.
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habitat includes
- URI: http://eol.org/schema/terms/Habitat
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loam
- URI: http://purl.obolibrary.org/obo/ENVO_00002258
- Definition: A soil composed of sand, silt, and clay in relatively even concentration (about 40-40-20% concentration respectively).
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leaf sheddability
- URI: http://purl.obolibrary.org/obo/FLOPO_0008548
- Definition: A plant's disposition to lose leaves by a natural process
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evergreen
- URI: http://purl.obolibrary.org/obo/PATO_0001733
- Definition: Evergreen (plant): A quality inhering in a plant by virtue of the bearer's disposition to retain foliage.
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life cycle habit
- URI: http://purl.obolibrary.org/obo/TO_0002725
- Definition: Determined for type of life cycle being annual, biennial, perennial etc.
- Comment: The life cycle habit indicates the typical duration of an individual plant's life. Common values are annual, biennial, and perennial. Some plants have different durations depending on environment or location, so a plant can have more than one value.
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perennial
- URI: http://purl.obolibrary.org/obo/FLOPO_0980073
- Definition: Of plant duration, a plant whose life span extends over more than two growing seasons, c.f. annual, biennial, ephemeral, of flowering with respect to architecture, hapaxanthic, monocarpic, pleonanthic
- Attribution: Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 12, July 2012. Glossary: http://www.mobot.org/mobot/research/apweb/top/glossaryi_p.html#perennial
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native range includes
- URI: http://eol.org/schema/terms/NativeRange
- Definition: Lists jurisdictions in which a given organism is a member of the undisturbed fauna or flora.
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Canada
- URI: http://www.geonames.org/6251999
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plant growth form
- URI: http://purl.obolibrary.org/obo/FLOPO_0900032
- Definition: whole plant growth form. eg: herbaceous, tree, liana
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tree
- URI: http://purl.obolibrary.org/obo/FLOPO_0900033
- Definition: whole plant arborescent
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wood density
- URI: http://purl.obolibrary.org/obo/OBA_1000040
- Definition: Secondary xylem volumetric density. Any measurable or observable characteristic related to the volumetric density of a secondary xylem.
- Attribution: [database_cross_reference: GOC:TermGenie] [database_cross_reference: http://dx.doi.org/10.1111/j.1461-0248.2009.01285.x]
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0.62 g/cm^3

Known occurrences, collected specimens and observations of pear hawthorn. View this species on GBIF