View source for Crataegus irrasa

{{Treatment/ID
|accepted_name=Crataegus irrasa
|accepted_authority=Sargent
|publications={{Treatment/Publication
|title=Rhodora
|place=5: 116. 1903
|year=1903
}}
|common_names=Aubépine pubérulente
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Crataegus noveboracensis
|authority=Sargent
}}
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Gillenieae;Crataegus;Crataegus sect. Coccineae;Crataegus (sect. Coccineae) ser. Rotundifoliae;Crataegus irrasa
|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. Coccineae]]</div><div class="higher-taxon"><small>series</small>[[Crataegus (sect. Coccineae) ser. Rotundifoliae]]</div><div class="higher-taxon"><small>species</small>[[Crataegus irrasa]]</div></div>
|volume=Volume 9
|mention_page=page 595
|treatment_page=page 601
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> spreading into broad thickets, 30–60 dm. <b>Stems</b> numerous; twigs: new growth olive- or orange-green, slender, marked by large, oblong, pale lenticels, glabrous, 1-year old light, grayish, or deep reddish brown, at end of 1d year often deep red-brown, 2-years old gray or light brown tinged with red, older ashy gray; thorns on twigs numerous, straight, 1-year old shiny, deep red-brown, older dark gray, ultimately ashy gray, stout, 3–6 cm. <b>Leaves</b>: stipules oblong-obovate, to falcate and acuminate on extension shoots, glandular-serrate, acuminate, villous; petiole length 33–40% blade, slightly winged distally, adaxially villous young, glandular, glands minute, dark red; blade ovate-oblong to oblong, (4–)5–7(–8) cm (more than 1/2 grown at anthesis), on extension shoots similar, larger, thin to chartaceous, base cuneate to nearly truncate, lobes 5 or 6 per side, sinuses moderately deep (max LII 15%), lobe apex acute, ± triangular, margins serrulate, veins 5–7 per side, apex acute, abaxial surface glabrous, adaxial appressed-scabrous, glabrescent. <b>Inflorescences</b> 9–12-flowered; branches villous; bracteoles linear, small, membranous, margins sessile-glandular. <b>Flowers</b> 13–15 mm diam.; hypanthium glabrous or pubescent; sepals reflexed after flowering, tapering from broad bases, short, margins minutely, bright red glandular, apex acute, abaxially villous; stamens 20, anthers pale yellow, small; styles 4 or 5. <b>Pomes</b> in broad, multi-fruited clusters, drooping or erect on stout branches; reddish, suborbicular to oblong, 12–14 mm diam., glabrous or pubescent; sepals persistent, sometimes until following spring, prominent, appressed to spreading; pyrenes 4 or 5, full and rounded at ends.</span><!--

-->{{Treatment/Body
|phenology=Flowering May–Jun; fruiting Sep.
|habitat=Brush, old fields
|elevation=0–300 m
|distribution=Nfld. and Labr. (Nfld.);Ont.;Que.;Conn.;N.Y.;Wis.
|discussion=<p>The proven range of <i>Crataegus irrasa</i> is from eastern Ontario and nearby New York to Newfoundland. This species is to be expected in New England.</p><!--
--><p><i>Crataegus irrasa</i> is readily distinguished from both <i>C. chrysocarpa </i>var.<i> vigintistamina</i> and <i>C. oakesiana</i> by its larger, more oblong, and more venous leaves. Dubious records from Minnesota have more rhombic leaves. The most distinctive form, C. noveboracensis, which flourishes in Muskoka, Ontario, has the largest, most venous, and most oblong leaves; similar plants are known also from Newfoundland. <i>Crataegus irrasa</i> is distinguished from the somewhat similar <i>C. flabellata</i> var. grayana by its wider and thicker leaves, much hairier corymbs and hypanthia, pale yellow anthers, and the color of the flesh of the ripe pomes.</p>
|tables=
|references=
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-->{{#Taxon:
name=Crataegus irrasa
|author=
|authority=Sargent
|rank=species
|parent rank=series
|synonyms=Crataegus noveboracensis
|basionyms=
|family=Rosaceae
|phenology=Flowering May–Jun; fruiting Sep.
|habitat=Brush, old fields
|elevation=0–300 m
|distribution=Nfld. and Labr. (Nfld.);Ont.;Que.;Conn.;N.Y.;Wis.
|reference=None
|publication title=Rhodora
|publication year=1903
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V9/V9_1032.xml
|subfamily=Rosaceae subfam. Amygdaloideae
|tribe=Rosaceae tribe Gillenieae
|genus=Crataegus
|section=Crataegus sect. Coccineae
|series=Crataegus (sect. Coccineae) ser. Rotundifoliae
|species=Crataegus irrasa
}}<!--

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