View source for Crataegus phaenopyrum

{{Treatment/ID
|accepted_name=Crataegus phaenopyrum
|accepted_authority=(Linnaeus f.) Medikus
|publications={{Treatment/Publication
|title=Gesch. Bot.,
|place=84. 1793
|year=1793
}}
|common_names=Washington thorn
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms={{Treatment/ID/Basionym
|name=Mespilus phaenopyrum
|authority=Linnaeus f.
|publication_title=Suppl. Pl.,
|publication_place=254. 1782
}}
|synonyms={{Treatment/ID/Synonym
|name=Crataegus youngii
|authority=Sargent
}}
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Gillenieae;Crataegus;Crataegus sect. Crataegus;Crataegus (sect. Crataegus) ser. Cordatae;Crataegus phaenopyrum
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Amygdaloideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Gillenieae]]</div><div class="higher-taxon"><small>genus</small>[[Crataegus]]</div><div class="higher-taxon"><small>section</small>[[Crataegus sect. Crataegus]]</div><div class="higher-taxon"><small>series</small>[[Crataegus (sect. Crataegus) ser. Cordatae]]</div><div class="higher-taxon"><small>species</small>[[Crataegus phaenopyrum]]</div></div>
|volume=Volume 9
|mention_page=
|treatment_page=page 499
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Trees,</b> 40–100 dm. <b>Stems</b>: 3-year old twigs shiny, deep reddish brown, older dark gray; thorns on twigs ± straight, 2–5 cm. <b>Leaves</b>: petiole slender, sometimes both abaxially and adaxially short rusty-tomentose, eglandular; blade broadly to narrowly deltate, 3–6 cm, base truncate to rarely cuneate or cordate, sometimes very shallowly so, lobes palmately or pinnately 2(or 3) per side, margins serrulate, veins 6 or 7(or 8) per side (to sinuses), apex acute, surfaces glabrous. <b>Inflorescences</b> 15–30-flowered, flowers strong-smelling; branches glabrous; bracteole margins stipitate-glandular. <b>Flowers</b> 10–12 mm diam.; hypanthium glabrous; sepals 2 mm; stamens 20, anthers ivory; styles 3(or 4). <b>2n</b> = 51, 68.</span><!--

-->{{Treatment/Body
|phenology=Flowering Jun; fruiting Sep–Nov.
|habitat=Woodland edges, gaps, scrub, damp locations
|elevation=10–300 m
|distribution=Ont.;Ark.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;La.;Md.;Mich.;Miss.;Mo.;N.C.;Ohio;Oreg.;Pa.;S.C.;Tenn.;Va.;Wash.;W.Va.
|discussion=<p><i>Crataegus phaenopyrum</i> has a wide native range across the middle latitudes of the United States from Missouri to Maryland and southward but is not particularly abundant. In the northern and western states and Ontario, it is introduced. All alleged specimens for Alabama proved to be wrongly identified (J. B. Phipps 1998).</p><!--
--><p>The flowering season of the Washington thorn is the latest of all North American hawthorns. The species is one of the most widely planted ornamentals in the genus, being elegantly treelike and possessing beautiful, remarkably rust-resistant foliage at all seasons as well as attractive flowers and fruit. Several cultivars are known.</p><!--
--><p><i>Crataegus</i> cordata (Miller) Aiton 1789 (= <i>Mespilus</i> cordata Miller 1757) was commonly used for <i>C. phaenopyrum</i> until the early 20th century (J. B. Phipps 1999).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Crataegus phaenopyrum
|author=
|authority=(Linnaeus f.) Medikus
|rank=species
|parent rank=series
|synonyms=Crataegus youngii
|basionyms=Mespilus phaenopyrum
|family=Rosaceae
|phenology=Flowering Jun; fruiting Sep–Nov.
|habitat=Woodland edges, gaps, scrub, damp locations
|elevation=10–300 m
|distribution=Ont.;Ark.;Del.;Fla.;Ga.;Ill.;Ind.;Ky.;La.;Md.;Mich.;Miss.;Mo.;N.C.;Ohio;Oreg.;Pa.;S.C.;Tenn.;Va.;Wash.;W.Va.
|reference=None
|publication title=Gesch. Bot.,
|publication year=1793
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V9/V9_838.xml
|subfamily=Rosaceae subfam. Amygdaloideae
|tribe=Rosaceae tribe Gillenieae
|genus=Crataegus
|section=Crataegus sect. Crataegus
|series=Crataegus (sect. Crataegus) ser. Cordatae
|species=Crataegus phaenopyrum
}}<!--

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