View source for Crataegus cognata

{{Treatment/ID
|accepted_name=Crataegus cognata
|accepted_authority=Sargent
|publications={{Treatment/Publication
|title=Rhodora
|place=5: 58. 1903
|year=1903
}}
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Crataegus aperta
|authority=Sargent
}} {{Treatment/ID/Synonym
|name=C. patrum
|authority=Sargent
}} {{Treatment/ID/Synonym
|name=C. pruinosa var. cognata
|authority=(Sargent) J. B. Phipps
}} {{Treatment/ID/Synonym
|name=C. pruinosa var. latisepala
|authority=(Ashe) Eggleston
}}
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Gillenieae;Crataegus;Crataegus sect. Coccineae;Crataegus (sect. Coccineae) ser. Pruinosae;Crataegus cognata
|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. Pruinosae]]</div><div class="higher-taxon"><small>species</small>[[Crataegus cognata]]</div></div>
|volume=Volume 9
|mention_page=page 572, 574, 578
|treatment_page=page 577
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> 20–40 dm. <b>Stems</b>: main branches often suberect; twigs: new growth reddish brown, 1-year old purple-brown, older dark gray; thorns on twigs numerous, straight to slightly recurved, 2-years old black, shiny, ± slender, 3–5 cm. <b>Leaves</b>: petiole length 28–36% blade, eglandular or with 1–2 glands distally; blade ovate, 3.5–5.5 cm, subcoriaceous, base broadly cuneate to truncate, lobes 3(or 4) per side, sinuses shallow, lobe apex subacute, margins crenate-serrate, veins 5–7 per side, apex subacute, surfaces glabrous. <b>Inflorescences</b> 4- or 5-flowered; branches glabrous; bracteole margins short-stipitate-glandular. <b>Flowers</b> 17–19 mm diam.; hypanthium glabrous; sepals narrowly triangular, 5 mm, base broad, margins subentire, abaxially glabrous; stamens 20, anthers white, 0.6–0.8 mm; styles 3 or 4. <b>Pomes</b> green with pink or purple pruinosity, becoming orange-red or crimson, 8–10 mm diam.; flesh thin; sepals on collar, spreading-reflexed; pyrenes 3 or 4. <b>2n</b> = 51.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr–May; fruiting Sep–Oct.
|habitat=Successional fields, fencerows, brush, open wood margins
|elevation=50–300 m
|distribution=Ont.;Mass.;Mich.;Mo.;N.Y.
|discussion=<p><i>Crataegus cognata</i> in the strict sense occurs from Michigan to Massachusetts with the southern limits poorly understood. Specimens from Missouri with large (5–7 cm) leaf blades and no or only weakly developed lobes should be checked against <i>C. pruinosa </i>var.<i> magnifolia</i>.</p><!--
--><p><i>Crataegus</i> perjucunda Sargent, native to Middlesex County, Ontario, is a distinctive local species similar to <i>C. cognata</i> but with shorter (2–3 cm) and finer thorns as well as relatively wider leaves (length/width = 1.2).</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Crataegus cognata
|author=
|authority=Sargent
|rank=species
|parent rank=series
|synonyms=Crataegus aperta;C. patrum;C. pruinosa var. cognata;C. pruinosa var. latisepala
|basionyms=
|family=Rosaceae
|phenology=Flowering Apr–May; fruiting Sep–Oct.
|habitat=Successional fields, fencerows, brush, open wood margins
|elevation=50–300 m
|distribution=Ont.;Mass.;Mich.;Mo.;N.Y.
|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_984.xml
|subfamily=Rosaceae subfam. Amygdaloideae
|tribe=Rosaceae tribe Gillenieae
|genus=Crataegus
|section=Crataegus sect. Coccineae
|series=Crataegus (sect. Coccineae) ser. Pruinosae
|species=Crataegus cognata
}}<!--

-->[[Category:Treatment]][[Category:Crataegus (sect. Coccineae) ser. Pruinosae]]