View source for Crataegus delawarensis

{{Treatment/ID
|accepted_name=Crataegus delawarensis
|accepted_authority=Sargent
|publications={{Treatment/Publication
|title=Bot. Gaz.
|place=35: 102. 1903
|year=1903
}}
|special_status={{Treatment/ID/Special_status
|code=C
|label=Conservation concern
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Crataegus pruinosa var. delawarensis
|authority=(Sargent) E. J. Palmer
|rank=variety
}}
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Gillenieae;Crataegus;Crataegus sect. Coccineae;Crataegus (sect. Coccineae) ser. Populneae;Crataegus delawarensis
|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. Populneae]]</div><div class="higher-taxon"><small>species</small>[[Crataegus delawarensis]]</div></div>
|volume=Volume 9
|mention_page=page 569
|treatment_page=page 568
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism some measurement;whole_organism growth form"><b>Shrubs,</b> 10–20 dm.</span> <span class="statement" id="st-d0_s1" data-properties="growth life cycle;growth coloration;growth pubescence;growth reflectance;growth coloration;growth life cycle;growth coloration;lenticel quantity;lenticel size;lenticel shape"><b>Stems:</b> twigs: new growth light green at first, pubescence not recorded, 1-year old dull redbrown, marked by occasional large, oblong lenticels, 2-years old light gray-brown;</span> <span class="statement" id="st-d0_s2" data-properties="thorn life cycle;thorn coloration;thorn size;thorn some measurement;twig course;twig course">thorns on twigs straight or slightly curved, 1-year old dark redbrown, slender, 3–4 cm.</span> <span class="statement" id="st-d0_s3" data-properties="stipule arrangement or course or shape;stipule shape;stipule architecture or shape"><b>Leaves:</b> stipules linear, acuminate, coarsely glandular-serrate;</span> <span class="statement" id="st-d0_s4" data-properties="petiole length;petiole architecture;petiole pubescence;gland duration;gland quantity;gland coloration;gland size">petiole length not recorded, distally slightly wing-margined, grooved, pubescence not recorded, glandular, glands deciduous, few, dark red, small;</span> <span class="statement" id="st-d0_s5" data-properties="blade position;blade coloration;blade coloration;blade coloration;blade shape;blade length/width;blade l/w;blade texture;base shape;base shape;base architecture or shape;shoot fragility;lobe quantity;lobe quantity;side height or length or size;lobe apex shape;margin architecture or shape;tooth architecture;vein quantity;vein quantity;apex shape;surface pubescence">blade abaxial paler than adaxial, light yellow green adaxially, rhombic to ovate, 5–6 cm length/width = 1.8–2, membranous, base narrowed from near mid-blade, or base broadly cuneate and entire on vigorous shoots, lobes 3 or 4 per side distally, short, lobe apex acute, margins finely, sometimes doubly, serrate, teeth gland-tipped, veins 3 or 4 per side, apex acute, surfaces glabrous.</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence architecture"><b>Inflorescences </b>5–8-flowered;</span> <span class="statement" id="st-d0_s7" data-properties="branch pubescence">branches glabrous;</span> <span class="statement" id="st-d0_s8" data-properties="bracteole coloration;bracteole shape;margin architecture or function or pubescence">bracteoles reddish, acute, margins glandular.</span> <span class="statement" id="st-d0_s9" data-properties="flower diameter"><b>Flowers </b>15 mm diam.;</span> <span class="statement" id="st-d0_s10" data-properties="hypanthium pubescence;hypanthium pubescence">hypanthium usually glabrous, sometimes hairy;</span> <span class="statement" id="st-d0_s11" data-properties="sepal shape;margin architecture or shape;apex shape">sepals broadly triangular, margins coarsely glandular-serrate, apex acuminate;</span> <span class="statement" id="st-d0_s12" data-properties="stamen quantity;anther coloration">stamens 10, anthers pale-yellow;</span> <span class="statement" id="st-d0_s13" data-properties="style quantity;style quantity;style orientation;tomentum pubescence or relief">styles 3 or 4, arising from rough tomentum.</span> <span class="statement" id="st-d0_s14" data-properties="pome coloration;pome shape;pome diameter;pome width;pome coating"><b>Pomes </b>dark red, suborbicular, 11–12 mm diam. wider than tall, not pruinose;</span> <span class="statement" id="st-d0_s15" data-properties="sepal fixation or orientation">sepals closely appressed;</span> <span class="statement" id="st-d0_s16" data-properties="pyrene quantity;pyrene quantity;pyrene architecture">pyrenes 3 or 4, dorsally prominently grooved.</span><!--

-->{{Treatment/Body
|phenology=Flowering Apr; fruiting Sep–Oct.
|habitat=Brush
|elevation=20–100 m
|distribution=Del.
|discussion=<p>Of conservation concern.</p><!--
--><p>Crataegus delawarensis is known only from northern Delaware; it differs from other members of the series by its narrow leaf blades and yellow anthers.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Crataegus delawarensis
|authority=Sargent
|rank=species
|parent rank=series
|synonyms=Crataegus pruinosa var. delawarensis
|basionyms=
|family=Rosaceae
|phenology=Flowering Apr; fruiting Sep–Oct.
|habitat=Brush
|elevation=20–100 m
|distribution=Del.
|reference=None
|publication title=Bot. Gaz.
|publication year=1903
|special status=Conservation concern;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V9/V9_965.xml
|subfamily=Rosaceae subfam. Amygdaloideae
|tribe=Rosaceae tribe Gillenieae
|genus=Crataegus
|section=Crataegus sect. Coccineae
|series=Crataegus (sect. Coccineae) ser. Populneae
|species=Crataegus delawarensis
|anther coloration=pale-yellow
|apex shape=acuminate;acute
|base architecture or shape=entire
|base shape=cuneate;narrowed
|blade coloration=green;light yellow;paler
|blade l/w=1.8;2
|blade length/width=5cm;6cm
|blade position=abaxial
|blade shape=rhombic;ovate
|blade texture=membranous
|bracteole coloration=reddish
|bracteole shape=acute
|branch pubescence=glabrous
|flower diameter=15
|gland coloration=dark red
|gland duration=deciduous
|gland quantity=few
|gland size=small
|growth coloration=light gray-brown;redbrown;light green
|growth life cycle=old;new
|growth pubescence=not old
|growth reflectance=dull
|hypanthium pubescence=hairy;glabrous
|inflorescence architecture=5-8-flowered
|lenticel quantity=occasional
|lenticel shape=oblong
|lenticel size=large
|lobe apex shape=acute
|lobe quantity=4;3
|margin architecture or function or pubescence=glandular
|margin architecture or shape=glandular-serrate;serrate
|petiole architecture=grooved
|petiole length=wing-margined
|petiole pubescence=not glandular
|pome coating=not pruinose
|pome coloration=dark red
|pome diameter=11mm;12mm
|pome shape=suborbicular
|pome width=wider than tall
|pyrene architecture=grooved
|pyrene quantity=4;3
|sepal fixation or orientation=appressed
|sepal shape=triangular
|shoot fragility=vigorous
|side height or length or size=short
|stamen quantity=10
|stipule architecture or shape=glandular-serrate
|stipule arrangement or course or shape=linear
|stipule shape=acuminate
|style orientation=arising
|style quantity=4;3
|surface pubescence=glabrous
|thorn coloration=dark redbrown
|thorn life cycle=old
|thorn size=slender
|thorn some measurement=3cm;4cm
|tomentum pubescence or relief=rough
|tooth architecture=gland-tipped
|twig course=curved;straight
|vein quantity=4;3
|whole_organism growth form=shrub
|whole_organism some measurement=10dm;20dm
}}<!--

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