View source for Crataegus rubribracteolata

{{Treatment/ID
|accepted_name=Crataegus rubribracteolata
|accepted_authority=J. B. Phipps & O’Kennon
|publications={{Treatment/Publication
|title=J. Bot. Res. Inst. Texas
|place=1: 1073, plates 6.1c, 7.3c, fig. 20. 2007
|year=2007
}}
|common_names=Red bracteole hawthorn
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Gillenieae;Crataegus;Crataegus sect. Macracanthae;Crataegus (sect. Macracanthae) ser. Macracanthae;Crataegus rubribracteolata
|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. Macracanthae]]</div><div class="higher-taxon"><small>series</small>[[Crataegus (sect. Macracanthae) ser. Macracanthae]]</div><div class="higher-taxon"><small>species</small>[[Crataegus rubribracteolata]]</div></div>
|volume=Volume 9
|mention_page=page 516, 517, 521, 596
|treatment_page=page 520
}}<!--

--><span class="statement" id="st-d0_s0" data-properties="whole_organism orientation;whole_organism architecture or growth form;whole_organism some measurement;whole_organism growth form"><b>Shrubs,</b> erect, multistemmed in open, wide branching in shade, 20–30 dm.</span> <span class="statement" id="st-d0_s1" data-properties="bud-scale size;bud-scale coloration"><b>Stems:</b> expanding bud-scales bright rufous-red;</span> <span class="statement" id="st-d0_s2" data-properties="growth life cycle;growth coloration;growth life cycle;growth position;growth coloration;growth life cycle;growth coloration;growth life cycle;growth coloration;growth coloration">twigs: new growth color not recorded, appressed-pubescent, 1-year old mid brown, 2-years old dark redbrown, older gray or dark gray;</span> <span class="statement" id="st-d0_s3" data-properties="thorn course;thorn life cycle;thorn coloration;thorn coloration;thorn fragility or size;thorn some measurement;twig quantity">thorns on twigs usually numerous, straight to slightly curved, 1-year old dark blackish brown, ± stout, 3.5–5.5 cm.</span> <span class="statement" id="st-d0_s4" data-properties="petiole length;petiole architecture or function or pubescence"><b>Leaves:</b> petiole length 30–35% blade, densely pubescent in adaxial sulcus, ± sessile-glandular;</span> <span class="statement" id="st-d0_s5" data-properties="blade shape;blade some measurement;blade width;base shape;lobe quantity;lobe quantity;sinuse depth;lobe apex shape;margin shape;margin life cycle;tooth architecture;tooth shape;vein quantity;vein quantity;apex shape;abaxial surface pubescence;hair count or density;adaxial surface pubescence;adaxial surface life cycle">blade ± ovate to ovate-trullate, 4–7 cm, ± thin, base cuneate to broadly cuneate, lobes (4 or) 5 or 6 per side, sinuses moderately deep, max LII 25–33%, lobe apex acute to acuminate, margins with regular, acute teeth, often subacute mature, veins (5 or) 6 or 7 per side, apex acute to acuminate, abaxial surface glabrous except for sparse hairs along midvein proximally, adaxial ± densely scabrous-pubescent young (variably persistent to maturity).</span> <span class="statement" id="st-d0_s6" data-properties="inflorescence architecture"><b>Inflorescences </b>(6–) 8–12-flowered;</span> <span class="statement" id="st-d0_s7" data-properties="branch pubescence">branches ± tomentose;</span> <span class="statement" id="st-d0_s8" data-properties="bracteole quantity;bracteole coloration;bracteole coloration;bracteole coloration;bracteole size or width;margin architecture or function or pubescence">bracteoles abundant, deep orange-red or fading, narrow, margins densely sessile-glandular.</span> <span class="statement" id="st-d0_s9" data-properties="flower diameter"><b>Flowers </b>12–15 mm diam.;</span> <span class="statement" id="st-d0_s10" data-properties="hypanthium pubescence;hypanthium pubescence">hypanthium ± tomentose or densely pubescent;</span> <span class="statement" id="st-d0_s11" data-properties="sepal coloration;sepal coloration;sepal shape;sepal some measurement;margin shape;apex coloration;apex coloration;apex pubescence;apex pubescence">sepals greenish or pale green, triangular, 3–5 mm, margins glandular-denticulate, apex ± red or paler red, abaxially glabrous, adaxially pubescent;</span> <span class="statement" id="st-d0_s12" data-properties="stamen quantity;anther coloration;anther coloration">stamens 10, anthers ivory or cream;</span> <span class="statement" id="st-d0_s13" data-properties="style quantity;style quantity">styles 3 or 4.</span> <span class="statement" id="st-d0_s14" data-properties="pome quantity;pome coloration;pome life cycle;pome coloration;pome coloration;pome life cycle;pome shape;pome height;pome pubescence;infructescence architecture or arrangement"><b>Pomes </b>3–10 in ± compact infructescences, red young, bright red or orange-scarlet in shade mature, ± ellipsoid to suborbicular, 9–13 mm tall, densely to sometimes sparsely pubescent;</span> <span class="statement" id="st-d0_s15" data-properties="sepal fixation or orientation;sepal some measurement">sepals appressed, 3–5 mm;</span> <span class="statement" id="st-d0_s16" data-properties="pyrene quantity;pyrene quantity;side shape">pyrenes 3 or 4 (or 5), sides ± deeply concave.</span><!--

-->{{Treatment/Body
|phenology=Flowering late May; fruiting late Aug–Sep.
|habitat=Thickets, sometimes under aspen
|elevation=700–1100 m
|distribution=Alta.;Sask.
|discussion=<p>Crataegus rubribracteolata is restricted to the Cypress Hills and is common in suitable habitats. The record from Montana (Bear’s Paw Mountains, Hill County) is now considered dubious.</p><!--
--><p>Crataegus rubribracteolata can be recognized by its upright habit when grown in full light. Surprisingly, it is most easily confused with C. ursopedensis (see key characters), not with C. sheridana. To C. ursopedensis, C. rubrobracteolata is similar in leaf shape, inflorescence, and indumentum; the mature leaves of C. rubribracteolata average smaller, except in some shade forms; both inflorescence form and indumentum are denser. It lacks the strikingly flabellate young leaves of C. ursopedensis, flowers significantly earlier, has smaller flowers, as well as different colored bracteoles. The two species are easily confused when these characteristics are not available; in fruit, the technical characteristics of pyrene and sepal orientation need careful observation.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Crataegus rubribracteolata
|authority=J. B. Phipps & O’Kennon
|rank=species
|parent rank=series
|synonyms=
|basionyms=
|family=Rosaceae
|phenology=Flowering late May; fruiting late Aug–Sep.
|habitat=Thickets, sometimes under aspen
|elevation=700–1100 m
|distribution=Alta.;Sask.
|reference=None
|publication title=J. Bot. Res. Inst. Texas
|publication year=2007
|special status=Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/84153f6d59a0a91d69695978a64cee7560374f8e/V9/V9_880.xml
|subfamily=Rosaceae subfam. Amygdaloideae
|tribe=Rosaceae tribe Gillenieae
|genus=Crataegus
|section=Crataegus sect. Macracanthae
|series=Crataegus (sect. Macracanthae) ser. Macracanthae
|species=Crataegus rubribracteolata
|abaxial surface pubescence=glabrous
|adaxial surface life cycle=young
|adaxial surface pubescence=scabrous-pubescent
|anther coloration=cream;ivory
|apex coloration=paler red;red
|apex pubescence=pubescent;glabrous
|apex shape=acute;acuminate
|base shape=cuneate;broadly cuneate
|blade shape=less ovate;ovate-trullate
|blade some measurement=4cm;7cm
|blade width=thin
|bracteole coloration=fading;orange-red;deep
|bracteole quantity=abundant
|bracteole size or width=narrow
|branch pubescence=tomentose
|bud-scale coloration=bright rufous-red
|bud-scale size=expanding
|flower diameter=12mm;15mm
|growth coloration=dark gray;gray;dark redbrown;brown;appressed-pubescent
|growth life cycle=older;old;old;new
|growth position=mid
|hair count or density=sparse
|hypanthium pubescence=pubescent;tomentose
|inflorescence architecture=(6-)8-12-flowered
|infructescence architecture or arrangement=compact
|lobe apex shape=acute;acuminate
|lobe quantity=6;5
|margin architecture or function or pubescence=sessile-glandular
|margin life cycle=mature
|margin shape=glandular-denticulate;subacute
|petiole architecture or function or pubescence=sessile-glandular
|petiole length=pubescent
|pome coloration=orange-scarlet;bright red;red
|pome height=9mm;13mm
|pome life cycle=mature;young
|pome pubescence=pubescent
|pome quantity=3;10
|pome shape=less ellipsoid;suborbicular
|pyrene quantity=4;3
|sepal coloration=pale green;greenish
|sepal fixation or orientation=appressed
|sepal shape=triangular
|sepal some measurement=3mm;5mm
|side shape=concave
|sinuse depth=deep
|stamen quantity=10
|style quantity=4;3
|thorn coloration=brown;dark blackish
|thorn course=straight;slightly curved
|thorn fragility or size=stout
|thorn life cycle=old
|thorn some measurement=3.5cm;5.5cm
|tooth architecture=regular
|tooth shape=acute
|twig quantity=numerous
|vein quantity=7;6
|whole_organism architecture or growth form=multistemmed
|whole_organism growth form=shrub
|whole_organism orientation=erect
|whole_organism some measurement=20dm;30dm
}}<!--

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